Kamailio stop responding to AWS R53 health check - sr-users

13 Nov 2019

Hi Karsten,

These are our current settings:

root@sjoprodkama51:/var/log # grep max_connections
/etc/kamailio/kamailio.cfg
tcp_max_connections=32768
tls_max_connections=32768
root@sjoprodkama51:/var/log #

which seems more than enough I would think.

On Wed, Nov 13, 2019 at 4:25 PM Andrew Chen <achen@fuze.com
<mailto:achen@fuze.com>> wrote:

    Thanks Jurijs.

    We just upgraded to 5.2.5 to support openssl 1.1.1 which is
    required for ubuntu 18.04.  Is it possible to have back port
    this fix to 5.2.x release since we just released 5.2.5 through
    our battery of QA testing?

    On Wed, Nov 13, 2019 at 4:14 PM Jurijs Ivolga
    <jurijs.ivolga@gmail.com <mailto:jurijs.ivolga@gmail.com>> wrote:

        Hi Andrew,

        I'm pretty sure this is bug what you are talking about:

        https://github.com/kamailio/kamailio/issues/1860

        It should be fixed in 5.3.0 I believe, or you can always
        downgrade openssl to 1.0 as described here:

        https://www.kamailio.org/wiki/tutorials/tls/howto-openssl-1-0

        Jurijs

        On Wed, Nov 13, 2019 at 10:40 PM Andrew Chen
        <achen@fuze.com <mailto:achen@fuze.com>> wrote:

            So another update.  As it turns out, this remote IP
            sent a slew of tls connections to the Kamailio box
            within the same second:

            root@sjoprodkama51:/var/log # grep 104.248.215.53
            falco_events.log | wc -l
            114
            root@sjoprodkama51:/var/log # 

            this all came in at 18:28:05 which matches the time of
            those errors.

            Should this cause Kamailio to totally freeze up?

            On Wed, Nov 13, 2019 at 2:51 PM Andrew Chen
            <achen@fuze.com <mailto:achen@fuze.com>> wrote:

                Hi Karsten,

                Good point.  See below:

                Kamailio ver: 5.2.5+bionic
                Ubuntu version: 18.04.02 LTS
                Kernel version: 4.15.0-1043-aws #45-Ubuntu SMP Mon
                Jun 24 14:07:03 UTC 2019 x86_64 x86_64 x86_64
                GNU/Linux
                openssl version: 1.1.1-1ubuntu2.1~18.04.4

                Setup:
                - R53 is our load balancer on top running health
                check on a pair of kams.
                - First node has no issues and running the same
                setup + SIP traffic
                - Second node as shown above was the one that went
                into "Unhealthy" state.

                Hope this helps

                On Wed, Nov 13, 2019 at 2:46 PM Karsten Horsmann
                <khorsmann@gmail.com <mailto:khorsmann@gmail.com>>
                wrote:

                    Hi Andrew,

                    Would help if you could could describe your
                    setup a bit more. 

                    Like the Kamailio version, the system distro
                    and as we see many tls messages your openssl
                    version. 

                    Maybe the traveling developers have any ideas
                    then. 

                    Cheers 
                    Karsten Horsmann 

                    Andrew Chen <achen@fuze.com
                    <mailto:achen@fuze.com>> schrieb am Mi., 13.
                    Nov. 2019, 20:29:

                        Hi all,

                        R53 reported healthcheck failure on tcp
                        port 5060.  Looking at the system, all the
                        ports that kamailio listens on can't be
                        monitored remotely.  To test this theory,
                        I can telnet successfully to consul port. 
                        I ran tcpdump and see no responses
                        returned back to R53 monitoring hosts:

                        tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
                        listening on ens5, link-type EN10MB (Ethernet), capture size 262144 bytes
                        19:11:49.368378 IP ec2-54-241-32-75.us-west-1.compute.amazonaws.com.10072 > sjoprodkama51.fuzemeeting.com.sip: Flags [S], seq 1252984048, win 29200, options [mss 1460,sackOK,TS val 3770272726 ecr 0,nop,wscale 7], length 0
                        19:11:49.558877 IP ec2-107-23-255-43.compute-1.amazonaws.com.60794 > sjoprodkama51.fuzemeeting.com.sip: Flags [S], seq 3484910496, win 29200, options [mss 1460,sackOK,TS val 1780607162 ecr 0,nop,wscale 7], length 0
                        19:11:50.572870 IP ec2-107-23-255-43.compute-1.amazonaws.com.60794 > sjoprodkama51.fuzemeeting.com.sip: Flags [S], seq 3484910496, win 29200, options [mss 1460,sackOK,TS val 1780608175 ecr 0,nop,wscale 7], length 0

                        Fixed the issue after restarting kamailio
                        process.

                        Given this system is support production
                        traffic, we have minimized the logging on
                        it.  The events that we thought may lead
                        to this is as follows:

                          Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20304]: ERROR: tls
                        [tls_util.h:42]: tls_err_ret(): TLS
                        accept:error:14209102:SSL
                        routines:tls_early_post_process_client_hello:unsupported
                        protocol
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20304]: ERROR: <core>
                        [core/tcp_read.c:1505]: tcp_read_req():
                        ERROR: tcp_read_req: error reading - c:
                        0x7f33fda47c98 r: 0x7f33fda47d18 (-1)
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20304]: ERROR: tls
                        [tls_util.h:42]: tls_err_ret(): TLS
                        accept:error:14209102:SSL
                        routines:tls_early_post_process_client_hello:unsupported
                        protocol
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20304]: ERROR: <core>
                        [core/tcp_read.c:1505]: tcp_read_req():
                        ERROR: tcp_read_req: error reading - c:
                        0x7f33fda47c98 r: 0x7f33fda47d18 (-1)
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20306]: ERROR: tls
                        [tls_util.h:42]: tls_err_ret(): TLS
                        accept:error:14209102:SSL
                        routines:tls_early_post_process_client_hello:unsupported
                        protocol
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20306]: ERROR: <core>
                        [core/tcp_read.c:1505]: tcp_read_req():
                        ERROR: tcp_read_req: error reading - c:
                        0x7f33fd960380 r: 0x7f33fd960400 (-1)
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20304]: ERROR: tls
                        [tls_util.h:42]: tls_err_ret(): TLS
                        accept:error:14209102:SSL
                        routines:tls_early_post_process_client_hello:unsupported
                        protocol
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20304]: ERROR: <core>
                        [core/tcp_read.c:1505]: tcp_read_req():
                        ERROR: tcp_read_req: error reading - c:
                        0x7f33fda01dc0 r: 0x7f33fda01e40 (-1)
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20304]: ERROR: tls
                        [tls_util.h:42]: tls_err_ret(): TLS
                        accept:error:14209102:SSL
                        routines:tls_early_post_process_client_hello:unsupported
                        protocol
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20304]: ERROR: <core>
                        [core/tcp_read.c:1505]: tcp_read_req():
                        ERROR: tcp_read_req: error reading - c:
                        0x7f33fda47c98 r: 0x7f33fda47d18 (-1)
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20304]: ERROR: tls
                        [tls_util.h:42]: tls_err_ret(): TLS
                        accept:error:14209102:SSL
                        routines:tls_early_post_process_client_hello:unsupported
                        protocol
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20304]: ERROR: <core>
                        [core/tcp_read.c:1505]: tcp_read_req():
                        ERROR: tcp_read_req: error reading - c:
                        0x7f33fda47c98 r: 0x7f33fda47d18 (-1)
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20304]: ERROR: tls
                        [tls_util.h:42]: tls_err_ret(): TLS
                        accept:error:14209102:SSL
                        routines:tls_early_post_process_client_hello:unsupported
                        protocol
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20304]: ERROR: <core>
                        [core/tcp_read.c:1505]: tcp_read_req():
                        ERROR: tcp_read_req: error reading - c:
                        0x7f33fda47c98 r: 0x7f33fda47d18 (-1)
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20310]: ERROR: tls
                        [tls_util.h:42]: tls_err_ret(): TLS
                        accept:error:1417A0C1:SSL
                        routines:tls_post_process_client_hello:no
                        shared cipher
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20310]: ERROR: <core>
                        [core/tcp_read.c:1505]: tcp_read_req():
                        ERROR: tcp_read_req: error reading - c:
                        0x7f33fdd829e8 r: 0x7f33fdd82a68 (-1)
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20306]: ERROR: tls
                        [tls_util.h:42]: tls_err_ret(): TLS
                        accept:error:1417A0C1:SSL
                        routines:tls_post_process_client_hello:no
                        shared cipher
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20306]: ERROR: <core>
                        [core/tcp_read.c:1505]: tcp_read_req():
                        ERROR: tcp_read_req: error reading - c:
                        0x7f33fdb70738 r: 0x7f33fdb707b8 (-1)
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20310]: ERROR: tls
                        [tls_util.h:42]: tls_err_ret(): TLS
                        accept:error:1417A0C1:SSL
                        routines:tls_post_process_client_hello:no
                        shared cipher
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20310]: ERROR: tls
                        [tls_util.h:42]: tls_err_ret(): TLS
                        accept:error:1417A0C1:SSL
                        routines:tls_post_process_client_hello:no
                        shared cipher
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20310]: ERROR: <core>
                        [core/tcp_read.c:1505]: tcp_read_req():
                        ERROR: tcp_read_req: error reading - c:
                        0x7f33fdd829e8 r: 0x7f33fdd82a68 (-1)
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20306]: ERROR: <core>
                        [core/tcp_read.c:1505]: tcp_read_req():
                        ERROR: tcp_read_req: error reading - c:
                        0x7f33fda01dc0 r: 0x7f33fda01e40 (-1)
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20304]: ERROR: tls
                        [tls_util.h:42]: tls_err_ret(): TLS
                        accept:error:1408F119:SSL
                        routines:ssl3_get_record:decryption failed
                        or bad record mac
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20305]: ERROR: tls
                        [tls_util.h:42]: tls_err_ret(): TLS
                        accept:error:1408F119:SSL
                        routines:ssl3_get_record:decryption failed
                        or bad record mac
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20305]: ERROR: <core>
                        [core/tcp_read.c:1505]: tcp_read_req():
                        ERROR: tcp_read_req: error reading - c:
                        0x7f33fdaec8f0 r: 0x7f33fdaec970 (-1)
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20304]: ERROR: <core>
                        [core/tcp_read.c:1505]: tcp_read_req():
                        ERROR: tcp_read_req: error reading - c:
                        0x7f33fda47c98 r: 0x7f33fda47d18 (-1)
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20304]: ERROR: tls
                        [tls_util.h:42]: tls_err_ret(): TLS
                        accept:error:1417A0C1:SSL
                        routines:tls_post_process_client_hello:no
                        shared cipher
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20304]: ERROR: <core>
                        [core/tcp_read.c:1505]: tcp_read_req():
                        ERROR: tcp_read_req: error reading - c:
                        0x7f33fd93e6c0 r: 0x7f33fd93e740 (-1)
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20305]: ERROR: tls
                        [tls_util.h:42]: tls_err_ret(): TLS
                        accept:error:1417A0C1:SSL
                        routines:tls_post_process_client_hello:no
                        shared cipher
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20305]: ERROR: <core>
                        [core/tcp_read.c:1505]: tcp_read_req():
                        ERROR: tcp_read_req: error reading - c:
                        0x7f33fdaec8f0 r: 0x7f33fdaec970 (-1)
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20307]: ERROR: tls
                        [tls_util.h:42]: tls_err_ret(): TLS
                        accept:error:1408F119:SSL
                        routines:ssl3_get_record:decryption failed
                        or bad record mac
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20307]: ERROR: <core>
                        [core/tcp_read.c:1505]: tcp_read_req():
                        ERROR: tcp_read_req: error reading - c:
                        0x7f33fd960380 r: 0x7f33fd960400 (-1)
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20305]: ERROR: tls
                        [tls_util.h:42]: tls_err_ret(): TLS
                        accept:error:1417A0C1:SSL
                        routines:tls_post_process_client_hello:no
                        shared cipher
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20305]: ERROR: <core>
                        [core/tcp_read.c:1505]: tcp_read_req():
                        ERROR: tcp_read_req: error reading - c:
                        0x7f33fda47c98 r: 0x7f33fda47d18 (-1)
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20305]: ERROR: tls
                        [tls_util.h:42]: tls_err_ret(): TLS
                        accept:error:1417A0C1:SSL
                        routines:tls_post_process_client_hello:no
                        shared cipher
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20305]: ERROR: <core>
                        [core/tcp_read.c:1505]: tcp_read_req():
                        ERROR: tcp_read_req: error reading - c:
                        0x7f33fd960380 r: 0x7f33fd960400 (-1)
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20307]: ERROR: tls
                        [tls_util.h:42]: tls_err_ret(): TLS
                        accept:error:1417A0C1:SSL
                        routines:tls_post_process_client_hello:no
                        shared cipher
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20307]: ERROR: <core>
                        [core/tcp_read.c:1505]: tcp_read_req():
                        ERROR: tcp_read_req: error reading - c:
                        0x7f33fda47c98 r: 0x7f33fda47d18 (-1)
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20304]: ERROR: tls
                        [tls_util.h:42]: tls_err_ret(): TLS
                        accept:error:1417A0C1:SSL
                        routines:tls_post_process_client_hello:no
                        shared cipher
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20304]: ERROR: <core>
                        [core/tcp_read.c:1505]: tcp_read_req():
                        ERROR: tcp_read_req: error reading - c:
                        0x7f33fdaec8f0 r: 0x7f33fdaec970 (-1)
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20307]: ERROR: tls
                        [tls_util.h:42]: tls_err_ret(): TLS
                        accept:error:1417A0C1:SSL
                        routines:tls_post_process_client_hello:no
                        shared cipher
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20307]: ERROR: <core>
                        [core/tcp_read.c:1505]: tcp_read_req():
                        ERROR: tcp_read_req: error reading - c:
                        0x7f33fdd829e8 r: 0x7f33fdd82a68 (-1)
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20309]: ERROR: tls
                        [tls_util.h:42]: tls_err_ret(): TLS
                        accept:error:1417A0C1:SSL
                        routines:tls_post_process_client_hello:no
                        shared cipher
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20309]: ERROR: <core>
                        [core/tcp_read.c:1505]: tcp_read_req():
                        ERROR: tcp_read_req: error reading - c:
                        0x7f33fda47c98 r: 0x7f33fda47d18 (-1)
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20309]: ERROR: tls
                        [tls_util.h:42]: tls_err_ret(): TLS
                        accept:error:14209102:SSL
                        routines:tls_early_post_process_client_hello:unsupported
                        protocol
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20309]: ERROR: <core>
                        [core/tcp_read.c:1505]: tcp_read_req():
                        ERROR: tcp_read_req: error reading - c:
                        0x7f33fda69958 r: 0x7f33fda699d8 (-1)
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20308]: ERROR: tls
                        [tls_util.h:42]: tls_err_ret(): TLS
                        accept:error:1408F119:SSL
                        routines:ssl3_get_record:decryption failed
                        or bad record mac
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20308]: ERROR: <core>
                        [core/tcp_read.c:1505]: tcp_read_req():
                        ERROR: tcp_read_req: error reading - c:
                        0x7f33fd9c27a8 r: 0x7f33fd9c2828 (-1)
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20309]: ERROR: tls
                        [tls_util.h:42]: tls_err_ret(): TLS
                        accept:error:1417A0C1:SSL
                        routines:tls_post_process_client_hello:no
                        shared cipher
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20308]: ERROR: tls
                        [tls_util.h:42]: tls_err_ret(): TLS
                        accept:error:14209102:SSL
                        routines:tls_early_post_process_client_hello:unsupported
                        protocol
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20308]: ERROR: <core>
                        [core/tcp_read.c:1505]: tcp_read_req():
                        ERROR: tcp_read_req: error reading - c:
                        0x7f33fd9c27a8 r: 0x7f33fd9c2828 (-1)
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20309]: ERROR: <core>
                        [core/tcp_read.c:1505]: tcp_read_req():
                        ERROR: tcp_read_req: error reading - c:
                        0x7f33fdd829e8 r: 0x7f33fdd82a68 (-1)
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20308]: ERROR: tls
                        [tls_util.h:42]: tls_err_ret(): TLS
                        accept:error:1417A0C1:SSL
                        routines:tls_post_process_client_hello:no
                        shared cipher
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20308]: ERROR: <core>
                        [core/tcp_read.c:1505]: tcp_read_req():
                        ERROR: tcp_read_req: error reading - c:
                        0x7f33fda25fd8 r: 0x7f33fda26058 (-1)
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20311]: ERROR: tls
                        [tls_util.h:42]: tls_err_ret(): TLS
                        accept:error:1417A0C1:SSL
                        routines:tls_post_process_client_hello:no
                        shared cipher
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20311]: ERROR: <core>
                        [core/tcp_read.c:1505]: tcp_read_req():
                        ERROR: tcp_read_req: error reading - c:
                        0x7f33fda69958 r: 0x7f33fda699d8 (-1)
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20309]: ERROR: tls
                        [tls_util.h:42]: tls_err_ret(): TLS
                        accept:error:1417A0C1:SSL
                        routines:tls_post_process_client_hello:no
                        shared cipher
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20309]: ERROR: <core>
                        [core/tcp_read.c:1505]: tcp_read_req():
                        ERROR: tcp_read_req: error reading - c:
                        0x7f33fdd829e8 r: 0x7f33fdd82a68 (-1)
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20311]: ERROR: tls
                        [tls_util.h:42]: tls_err_ret(): TLS
                        accept:error:1417A0C1:SSL
                        routines:tls_post_process_client_hello:no
                        shared cipher
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20311]: ERROR: <core>
                        [core/tcp_read.c:1505]: tcp_read_req():
                        ERROR: tcp_read_req: error reading - c:
                        0x7f33fda25fd8 r: 0x7f33fda26058 (-1)
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20311]: ERROR: tls
                        [tls_util.h:42]: tls_err_ret(): TLS
                        accept:error:1417A0C1:SSL
                        routines:tls_post_process_client_hello:no
                        shared cipher
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20311]: ERROR: <core>
                        [core/tcp_read.c:1505]: tcp_read_req():
                        ERROR: tcp_read_req: error reading - c:
                        0x7f33fda25fd8 r: 0x7f33fda26058 (-1)
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20311]: ERROR: tls
                        [tls_util.h:42]: tls_err_ret(): TLS
                        accept:error:1417A0C1:SSL
                        routines:tls_post_process_client_hello:no
                        shared cipher
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20311]: ERROR: <core>
                        [core/tcp_read.c:1505]: tcp_read_req():
                        ERROR: tcp_read_req: error reading - c:
                        0x7f33fd9c27a8 r: 0x7f33fd9c2828 (-1)
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20314]: ERROR: tls
                        [tls_util.h:42]: tls_err_ret(): TLS
                        accept:error:1417A0C1:SSL
                        routines:tls_post_process_client_hello:no
                        shared cipher
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20314]: ERROR: <core>
                        [core/tcp_read.c:1505]: tcp_read_req():
                        ERROR: tcp_read_req: error reading - c:
                        0x7f33fda25fd8 r: 0x7f33fda26058 (-1)
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20312]: ERROR: tls
                        [tls_util.h:42]: tls_err_ret(): TLS
                        accept:error:1417A0C1:SSL
                        routines:tls_post_process_client_hello:no
                        shared cipher
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20312]: ERROR: <core>
                        [core/tcp_read.c:1505]: tcp_read_req():
                        ERROR: tcp_read_req: error reading - c:
                        0x7f33fd9c27a8 r: 0x7f33fd9c2828 (-1)
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20312]: ERROR: tls
                        [tls_util.h:42]: tls_err_ret(): TLS
                        accept:error:1417A0C1:SSL
                        routines:tls_post_process_client_hello:no
                        shared cipher
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20312]: ERROR: <core>
                        [core/tcp_read.c:1505]: tcp_read_req():
                        ERROR: tcp_read_req: error reading - c:
                        0x7f33fda25fd8 r: 0x7f33fda26058 (-1)
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20313]: ERROR: tls
                        [tls_util.h:42]: tls_err_ret(): TLS
                        accept:error:1417A0C1:SSL
                        routines:tls_post_process_client_hello:no
                        shared cipher
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20313]: ERROR: <core>
                        [core/tcp_read.c:1505]: tcp_read_req():
                        ERROR: tcp_read_req: error reading - c:
                        0x7f33fda47c98 r: 0x7f33fda47d18 (-1)
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20312]: ERROR: tls
                        [tls_util.h:42]: tls_err_ret(): TLS
                        accept:error:1417A0C1:SSL
                        routines:tls_post_process_client_hello:no
                        shared cipher
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20312]: ERROR: <core>
                        [core/tcp_read.c:1505]: tcp_read_req():
                        ERROR: tcp_read_req: error reading - c:
                        0x7f33fdbd5d78 r: 0x7f33fdbd5df8 (-1)
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20314]: ERROR: tls
                        [tls_util.h:42]: tls_err_ret(): TLS
                        accept:error:14209102:SSL
                        routines:tls_early_post_process_client_hello:unsupported
                        protocol
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20314]: ERROR: <core>
                        [core/tcp_read.c:1505]: tcp_read_req():
                        ERROR: tcp_read_req: error reading - c:
                        0x7f33fdb822d0 r: 0x7f33fdb82350 (-1)
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20313]: ERROR: tls
                        [tls_util.h:42]: tls_err_ret(): TLS
                        accept:error:14209102:SSL
                        routines:tls_early_post_process_client_hello:unsupported
                        protocol
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20314]: ERROR: tls
                        [tls_util.h:42]: tls_err_ret(): TLS
                        accept:error:14209102:SSL
                        routines:tls_early_post_process_client_hello:unsupported
                        protocol
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20314]: ERROR: <core>
                        [core/tcp_read.c:1505]: tcp_read_req():
                        ERROR: tcp_read_req: error reading - c:
                        0x7f33fdb822d0 r: 0x7f33fdb82350 (-1)
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20313]: ERROR: <core>
                        [core/tcp_read.c:1505]: tcp_read_req():
                        ERROR: tcp_read_req: error reading - c:
                        0x7f33fda47c98 r: 0x7f33fda47d18 (-1)
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20305]: ERROR: tls
                        [tls_util.h:42]: tls_err_ret(): TLS
                        accept:error:1408F119:SSL
                        routines:ssl3_get_record:decryption failed
                        or bad record mac
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20305]: ERROR: <core>
                        [core/tcp_read.c:1505]: tcp_read_req():
                        ERROR: tcp_read_req: error reading - c:
                        0x7f33fda01dc0 r: 0x7f33fda01e40 (-1)
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20305]: ERROR: tls
                        [tls_util.h:42]: tls_err_ret(): TLS
                        accept:error:14209102:SSL
                        routines:tls_early_post_process_client_hello:unsupported
                        protocol
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20305]: ERROR: <core>
                        [core/tcp_read.c:1505]: tcp_read_req():
                        ERROR: tcp_read_req: error reading - c:
                        0x7f33fd9c27a8 r: 0x7f33fd9c2828 (-1)
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20313]: ERROR: tls
                        [tls_util.h:42]: tls_err_ret(): TLS
                        accept:error:1417A0C1:SSL
                        routines:tls_post_process_client_hello:no
                        shared cipher
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20313]: ERROR: <core>
                        [core/tcp_read.c:1505]: tcp_read_req():
                        ERROR: tcp_read_req: error reading - c:
                        0x7f33fd9c27a8 r: 0x7f33fd9c2828 (-1)
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20304]: ERROR: tls
                        [tls_util.h:42]: tls_err_ret(): TLS
                        accept:error:1408F119:SSL
                        routines:ssl3_get_record:decryption failed
                        or bad record mac
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20304]: ERROR: <core>
                        [core/tcp_read.c:1505]: tcp_read_req():
                        ERROR: tcp_read_req: error reading - c:
                        0x7f33fdaec8f0 r: 0x7f33fdaec970 (-1)
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20304]: ERROR: tls
                        [tls_util.h:42]: tls_err_ret(): TLS
                        accept:error:1417A0C1:SSL
                        routines:tls_post_process_client_hello:no
                        shared cipher
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20304]: ERROR: <core>
                        [core/tcp_read.c:1505]: tcp_read_req():
                        ERROR: tcp_read_req: error reading - c:
                        0x7f33fd9c27a8 r: 0x7f33fd9c2828 (-1)
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20304]: ERROR: tls
                        [tls_util.h:42]: tls_err_ret(): TLS
                        accept:error:14209102:SSL
                        routines:tls_early_post_process_client_hello:unsupported
                        protocol
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20304]: ERROR: <core>
                        [core/tcp_read.c:1505]: tcp_read_req():
                        ERROR: tcp_read_req: error reading - c:
                        0x7f33fd9c27a8 r: 0x7f33fd9c2828 (-1)
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20313]: ERROR: tls
                        [tls_util.h:42]: tls_err_ret(): TLS
                        accept:error:1417A0C1:SSL
                        routines:tls_post_process_client_hello:no
                        shared cipher
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20313]: ERROR: <core>
                        [core/tcp_read.c:1505]: tcp_read_req():
                        ERROR: tcp_read_req: error reading - c:
                        0x7f33fda25fd8 r: 0x7f33fda26058 (-1)
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20304]: ERROR: tls
                        [tls_util.h:42]: tls_err_ret(): TLS
                        accept:error:14209102:SSL
                        routines:tls_early_post_process_client_hello:unsupported
                        protocol
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20304]: ERROR: <core>
                        [core/tcp_read.c:1505]: tcp_read_req():
                        ERROR: tcp_read_req: error reading - c:
                        0x7f33fdacac30 r: 0x7f33fdacacb0 (-1)
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20304]: ERROR: tls
                        [tls_util.h:42]: tls_err_ret(): TLS
                        accept:error:14209102:SSL
                        routines:tls_early_post_process_client_hello:unsupported
                        protocol
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20304]: ERROR: <core>
                        [core/tcp_read.c:1505]: tcp_read_req():
                        ERROR: tcp_read_req: error reading - c:
                        0x7f33fd9c27a8 r: 0x7f33fd9c2828 (-1)
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20314]: ERROR: tls
                        [tls_util.h:42]: tls_err_ret(): TLS
                        accept:error:14209102:SSL
                        routines:tls_early_post_process_client_hello:unsupported
                        protocol
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20314]: ERROR: <core>
                        [core/tcp_read.c:1505]: tcp_read_req():
                        ERROR: tcp_read_req: error reading - c:
                        0x7f33fdaec8f0 r: 0x7f33fdaec970 (-1)
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20313]: ERROR: tls
                        [tls_util.h:42]: tls_err_ret(): TLS
                        accept:error:1417A0C1:SSL
                        routines:tls_post_process_client_hello:no
                        shared cipher
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20313]: ERROR: <core>
                        [core/tcp_read.c:1505]: tcp_read_req():
                        ERROR: tcp_read_req: error reading - c:
                        0x7f33fd9c27a8 r: 0x7f33fd9c2828 (-1)
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20317]: BUG: tls
                        [tls_server.c:1303]: tls_read_f(): IO
                        error (0) Success
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20317]: ERROR: <core>
                        [core/tcp_read.c:1505]: tcp_read_req():
                        ERROR: tcp_read_req: error reading - c:
                        0x7f33fdacac30 r: 0x7f33fdacacb0 (-1)
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20313]: ERROR: tls
                        [tls_util.h:42]: tls_err_ret(): TLS
                        accept:error:1417A0C1:SSL
                        routines:tls_post_process_client_hello:no
                        shared cipher
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20313]: ERROR: <core>
                        [core/tcp_read.c:1505]: tcp_read_req():
                        ERROR: tcp_read_req: error reading - c:
                        0x7f33fdbb40b8 r: 0x7f33fdbb4138 (-1)
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20304]: ERROR: tls
                        [tls_util.h:42]: tls_err_ret(): TLS
                        accept:error:1417A0C1:SSL
                        routines:tls_post_process_client_hello:no
                        shared cipher
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20304]: ERROR: <core>
                        [core/tcp_read.c:1505]: tcp_read_req():
                        ERROR: tcp_read_req: error reading - c:
                        0x7f33fda01dc0 r: 0x7f33fda01e40 (-1)
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20308]: ERROR: tls
                        [tls_util.h:42]: tls_err_ret(): TLS
                        accept:error:1408F119:SSL
                        routines:ssl3_get_record:decryption failed
                        or bad record mac
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20308]: ERROR: <core>
                        [core/tcp_read.c:1505]: tcp_read_req():
                        ERROR: tcp_read_req: error reading - c:
                        0x7f33fdaa8f70 r: 0x7f33fdaa8ff0 (-1)
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20306]: ERROR: tls
                        [tls_util.h:42]: tls_err_ret(): TLS
                        accept:error:1408F119:SSL
                        routines:ssl3_get_record:decryption failed
                        or bad record mac
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20306]: ERROR: <core>
                        [core/tcp_read.c:1505]: tcp_read_req():
                        ERROR: tcp_read_req: error reading - c:
                        0x7f33fdb70738 r: 0x7f33fdb707b8 (-1)
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20308]: ERROR: tls
                        [tls_util.h:42]: tls_err_ret(): TLS
                        accept:error:1417A0C1:SSL
                        routines:tls_post_process_client_hello:no
                        shared cipher
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20308]: ERROR: <core>
                        [core/tcp_read.c:1505]: tcp_read_req():
                        ERROR: tcp_read_req: error reading - c:
                        0x7f33fdc7f490 r: 0x7f33fdc7f510 (-1)
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20317]: ERROR: tls
                        [tls_util.h:42]: tls_err_ret(): TLS
                        accept:error:1417A0C1:SSL
                        routines:tls_post_process_client_hello:no
                        shared cipher
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20317]: ERROR: <core>
                        [core/tcp_read.c:1505]: tcp_read_req():
                        ERROR: tcp_read_req: error reading - c:
                        0x7f33fdb70738 r: 0x7f33fdb707b8 (-1)
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20314]: ERROR: tls
                        [tls_util.h:42]: tls_err_ret(): TLS
                        accept:error:14209102:SSL
                        routines:tls_early_post_process_client_hello:unsupported
                        protocol
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20314]: ERROR: <core>
                        [core/tcp_read.c:1505]: tcp_read_req():
                        ERROR: tcp_read_req: error reading - c:
                        0x7f33fdbb40b8 r: 0x7f33fdbb4138 (-1)
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20313]: ERROR: tls
                        [tls_util.h:42]: tls_err_ret(): TLS
                        accept:error:14209102:SSL
                        routines:tls_early_post_process_client_hello:unsupported
                        protocol
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20313]: ERROR: <core>
                        [core/tcp_read.c:1505]: tcp_read_req():
                        ERROR: tcp_read_req: error reading - c:
                        0x7f33fdacac30 r: 0x7f33fdacacb0 (-1)
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20306]: ERROR: tls
                        [tls_util.h:42]: tls_err_ret(): TLS
                        accept:error:14209102:SSL
                        routines:tls_early_post_process_client_hello:unsupported
                        protocol
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20306]: ERROR: <core>
                        [core/tcp_read.c:1505]: tcp_read_req():
                        ERROR: tcp_read_req: error reading - c:
                        0x7f33fd9c27a8 r: 0x7f33fd9c2828 (-1)
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20304]: ERROR: tls
                        [tls_util.h:42]: tls_err_ret(): TLS
                        accept:error:1417A0C1:SSL
                        routines:tls_post_process_client_hello:no
                        shared cipher
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20304]: ERROR: <core>
                        [core/tcp_read.c:1505]: tcp_read_req():
                        ERROR: tcp_read_req: error reading - c:
                        0x7f33fd960380 r: 0x7f33fd960400 (-1)
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20304]: ERROR: tls
                        [tls_util.h:42]: tls_err_ret(): TLS
                        accept:error:14209102:SSL
                        routines:tls_early_post_process_client_hello:unsupported
                        protocol
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20304]: ERROR: <core>
                        [core/tcp_read.c:1505]: tcp_read_req():
                        ERROR: tcp_read_req: error reading - c:
                        0x7f33fda01dc0 r: 0x7f33fda01e40 (-1)
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20308]: ERROR: tls
                        [tls_util.h:42]: tls_err_ret(): TLS
                        accept:error:14209102:SSL
                        routines:tls_early_post_process_client_hello:unsupported
                        protocol
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20308]: ERROR: <core>
                        [core/tcp_read.c:1505]: tcp_read_req():
                        ERROR: tcp_read_req: error reading - c:
                        0x7f33fda01dc0 r: 0x7f33fda01e40 (-1)
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20304]: ERROR: tls
                        [tls_util.h:42]: tls_err_ret(): TLS
                        accept:error:14209102:SSL
                        routines:tls_early_post_process_client_hello:unsupported
                        protocol
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20304]: ERROR: <core>
                        [core/tcp_read.c:1505]: tcp_read_req():
                        ERROR: tcp_read_req: error reading - c:
                        0x7f33fd960380 r: 0x7f33fd960400 (-1)
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20304]: ERROR: tls
                        [tls_util.h:42]: tls_err_ret(): TLS
                        accept:error:14209102:SSL
                        routines:tls_early_post_process_client_hello:unsupported
                        protocol
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20304]: ERROR: <core>
                        [core/tcp_read.c:1505]: tcp_read_req():
                        ERROR: tcp_read_req: error reading - c:
                        0x7f33fdacac30 r: 0x7f33fdacacb0 (-1)
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20307]: ERROR: tls
                        [tls_util.h:42]: tls_err_ret(): TLS
                        accept:error:1408F119:SSL
                        routines:ssl3_get_record:decryption failed
                        or bad record mac
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20308]: ERROR: tls
                        [tls_util.h:42]: tls_err_ret(): TLS
                        accept:error:1417A0C1:SSL
                        routines:tls_post_process_client_hello:no
                        shared cipher
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20308]: ERROR: <core>
                        [core/tcp_read.c:1505]: tcp_read_req():
                        ERROR: tcp_read_req: error reading - c:
                        0x7f33fdaa8f70 r: 0x7f33fdaa8ff0 (-1)
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20307]: ERROR: <core>
                        [core/tcp_read.c:1505]: tcp_read_req():
                        ERROR: tcp_read_req: error reading - c:
                        0x7f33fd93e6c0 r: 0x7f33fd93e740 (-1)
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20305]: ERROR: tls
                        [tls_util.h:42]: tls_err_ret(): TLS
                        accept:error:1417A0C1:SSL
                        routines:tls_post_process_client_hello:no
                        shared cipher
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20305]: ERROR: <core>
                        [core/tcp_read.c:1505]: tcp_read_req():
                        ERROR: tcp_read_req: error reading - c:
                        0x7f33fdb70738 r: 0x7f33fdb707b8 (-1)
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20315]: ERROR: tls
                        [tls_util.h:42]: tls_err_ret(): TLS
                        accept:error:1408F119:SSL
                        routines:ssl3_get_record:decryption failed
                        or bad record mac
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20315]: ERROR: <core>
                        [core/tcp_read.c:1505]: tcp_read_req():
                        ERROR: tcp_read_req: error reading - c:
                        0x7f33fdb822d0 r: 0x7f33fdb82350 (-1)
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20316]: ERROR: tls
                        [tls_util.h:42]: tls_err_ret(): TLS
                        accept:error:1408F119:SSL
                        routines:ssl3_get_record:decryption failed
                        or bad record mac
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20316]: ERROR: <core>
                        [core/tcp_read.c:1505]: tcp_read_req():
                        ERROR: tcp_read_req: error reading - c:
                        0x7f33fda25fd8 r: 0x7f33fda26058 (-1)
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20306]: ERROR: tls
                        [tls_util.h:42]: tls_err_ret(): TLS
                        accept:error:1408F119:SSL
                        routines:ssl3_get_record:decryption failed
                        or bad record mac
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20306]: ERROR: <core>
                        [core/tcp_read.c:1505]: tcp_read_req():
                        ERROR: tcp_read_req: error reading - c:
                        0x7f33fdc196f8 r: 0x7f33fdc19778 (-1)
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20304]: ERROR: tls
                        [tls_util.h:42]: tls_err_ret(): TLS
                        accept:error:1408F119:SSL
                        routines:ssl3_get_record:decryption failed
                        or bad record mac
                        Nov 13 18:28:05 sjoprodkama51
                        /usr/sbin/kamailio[20304]: ERROR: <core>
                        [core/tcp_read.c:1505]: tcp_read_req():
                        ERROR: tcp_read_req: error reading - c:
                        0x7f33fd9c27a8 r: 0x7f33fd9c2828 (-1) 

                        Any thoughts on what would cause this issue?

                        Thanks 

                        -- 
                        Andy Chen
                        Sr. Telephony Lead Engineer
                        achen@
                        <mailto:achen@thinkingphones.com>fuze.com
                        <http://fuze.com>

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                -- 
                Andy Chen
                Sr. Telephony Lead Engineer
                415 516 5535 (M)
                achen@ <mailto:achen@thinkingphones.com>fuze.com
                <http://fuze.com>

            -- 
            Andy Chen
            Sr. Telephony Lead Engineer
            415 516 5535 (M)
            achen@ <mailto:achen@thinkingphones.com>fuze.com
            <http://fuze.com>

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    -- 
    Andy Chen
    Sr. Telephony Lead Engineer
    415 516 5535 (M)
    achen@ <mailto:achen@thinkingphones.com>fuze.com <http://fuze.com>

-- 
Andy Chen
Sr. Telephony Lead Engineer
415 516 5535 (M)
achen@ <mailto:achen@thinkingphones.com>fuze.com <http://fuze.com>