Hi Daniel,

The multiple records are because we are routing calls between UAs which are both registered against Kamailio via an external SIP server (our billing engine). That is causing there to be 2 dialogs created.

We have put in a quick hack to not call dlg_manage() when the $fU is “9989”. This does not create 2 records in the dialogs table and the BLF functionality works as expected.

What do you propose as the correct fix for this situation?

Thanks

Phil

From: Phil Lavin
Sent: 19 January 2016 09:42
To: 'miconda@gmail.com' <miconda@gmail.com>; Kamailio (SER) - Users Mailing List <sr-users@lists.sip-router.org>
Subject: RE: [SR-Users] Strange PUA Behaviour

Hi Daniel,

Thanks for your response. There are 2 records in the database. They are below:

mysql> select * from dialog\G;

*************************** 1. row ***************************

id: 602

hash_entry: 3537

hash_id: 8368

callid: 8f7b7053-2026fb79-350890bb@172.31.17.81~2o

from_uri: sip:9989@91.228.242.23

from_tag: bo2laqatpfnl7b3l.o

to_uri: sip:441164969988@185.28.212.118

to_tag: BCC9B8F7-2852AE14

caller_cseq: 124

callee_cseq: 0

caller_route_set: NULL

callee_route_set: NULL

caller_contact: sip:91.228.242.23:5061

callee_contact: sip:441164969988@185.28.212.246:24468

caller_sock: udp:185.28.212.118:5060

callee_sock: udp:185.28.212.118:5060

state: 4

start_time: 1453196293

timeout: 1453239493

sflags: 0

iflags: 0

toroute_name: NULL

req_uri: sip:441164969988@172.31.17.126

xdata: NULL

*************************** 2. row ***************************

id: 603

hash_entry: 2101

hash_id: 11063

callid: 8f7b7053-2026fb79-350890bb@172.31.17.81

from_uri: sip:441164969989@185.28.212.118

from_tag: 1B2E6CC3-5A94D549

to_uri: sip:441164969988@185.28.212.118;user=phone

to_tag: osmzuhhnrncelo22.i

caller_cseq: 2

callee_cseq: 0

caller_route_set: NULL

callee_route_set: <sip:91.228.242.23:5060;transport=udp;lr>

caller_contact: sip:441164969989@185.28.212.246:7816

callee_contact: sip:91.228.242.23:5061

caller_sock: udp:185.28.212.118:5060

callee_sock: udp:185.28.212.118:5060

state: 4

start_time: 1453196293

timeout: 1453239493

sflags: 0

iflags: 0

toroute_name: NULL

req_uri: sip:441164969988@sip.staging.cloudcall.com

xdata: NULL

2 rows in set (0.00 sec)

Config is as follows:

modparam("presence", "db_url", DBURL)

modparam("presence", "send_fast_notify", 0)

modparam("presence", "db_update_period", 20)

modparam("presence_xml", "db_url", DBURL)

modparam("presence_xml", "force_active", 1)

modparam("presence_dialoginfo", "force_single_dialog", 1)

modparam("pua", "db_url", DBURL)

modparam("pua", "db_mode", 2)

modparam("pua", "update_period", 20)

modparam("pua_dialoginfo", "send_publish_flag", FLT_DLGINFO)

modparam("pua_dialoginfo", "override_lifetime", 124)

Thanks

Phil

From: Daniel-Constantin Mierla [mailto:miconda@gmail.com]
Sent: 19 January 2016 07:27
To: Kamailio (SER) - Users Mailing List <sr-users@lists.sip-router.org>; Phil Lavin <phil.lavin@synety.com>
Subject: Re: [SR-Users] Strange PUA Behaviour

Hello,

when you get such situation, can you check the database and see if there are more records for the same presence dialog?

Also, can you send here the parameters for pua*/presence* modules? DB URL parameters are not relevant, you can skip/replace them as they contain password.

Cheers,
Daniel

On 18/01/16 19:15, Phil Lavin wrote:

Hi all,

We are investigating an issue with BLF whereby the BLF key on the subscribed phone does not always “turn off” after the call has ended. We have enabled force_single_dialog to keep things simple for debugging. The attached pcap is the result. The relevant stuff as I see it is:

·         Packet #60 – UA sends a BYE

·         Packet #62 – PUA sends a PUBLISH over loopback with a state of “terminated”

·         Packet #65 – The PUBLISH is sent out to the subscribed UA as a NOTIFY with a state of “early”

This causes the BLF light on the phone to continue flashing.

We are running a version of Kamailio compiled from the HEAD of the current 4.3 branch.

Any ideas?

Phil Lavin

Telecoms Systems Manager

CloudCall by SYNETY
www.cloudcall.com

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