Re: [SR-Users] How to correctly answer a PnP-SUBSCRIBE message

30 Mar 2020

so I changed it to 

t_uac_send("NOTIFY", "$(ct{s.substr,1,0}{s.striptail,1})",
"$su", "udp:192.168.1.156:5060","Call-ID:
$hdr(Call-ID)\r\nSubscription-State: terminated;reason=timeout\r\nEvent:
$hdr(Event)\r\nContent-Type: application/url\r\nFrom: $fU\r\nTo: $hdr(From)",
"http://server.conf/settings-{mac}");

unfortunately the SIP - Pakets are still send from the wrong IP.

U 192.168.1.152:57145 -> 224.0.1.75:5060 #1
SUBSCRIBE sip:MAC%3a0004137120D8@lan SIP/2.0.
Via: SIP/2.0/UDP 192.168.1.152:57145;rport.
From: <sip:MAC%3a0004137120D8@lan>;tag=1881587606.
To: <sip:MAC%3a0004137120D8@lan>.
Call-ID: 1699827764(a)192.168.1.152.
CSeq: 1 SUBSCRIBE.
Event:
ua-profile;profile-type="device";vendor="snom";model="snom760";version="8.9.3.80".
Expires: 0.
Accept: application/url.
Contact: <sip:192.168.1.152:57145>.
User-Agent: snom760/8.9.3.80.
Content-Length: 0.
.

#
U 192.168.1.156:5060 -> 192.168.1.152:57145 #2
SIP/2.0 200 OK.
Via: SIP/2.0/UDP 192.168.1.152:57145;rport=57145;received=192.168.1.152.
From: <sip:MAC%3a0004137120D8@lan>;tag=1881587606.
To: <sip:MAC%3a0004137120D8@lan>;tag=fb721cde02dffb6bb099728401306798.3eb0.
Call-ID: 1699827764(a)192.168.1.152.
CSeq: 1 SUBSCRIBE.
Server: kamailio (5.2.5 (x86_64/linux)).
Content-Length: 0.
.

#
U 172.23.56.1:5060 -> 192.168.1.152:57145 #3
NOTIFY sip:192.168.1.152:57145 SIP/2.0.
Via: SIP/2.0/UDP
192.168.1.156:5060;branch=z9hG4bKdb57.88b81c37000000000000000000000000.0.
To: <sip:MAC%3a0004137120D8@lan>;tag=1881587606.
From: <MAC%3a0004137120D8>;tag=da567df9df3ac234e43969a051db4641-6c90.
CSeq: 10 NOTIFY.
Call-ID: 1699827764(a)192.168.1.152.
Max-Forwards: 70.
Content-Length: 33.
User-Agent: kamailio (5.2.5 (x86_64/linux)).
Subscription-State: terminated;reason=timeout.
Event:
ua-profile;profile-type="device";vendor="snom";model="snom760";version="8.9.3.80".
Content-Type: application/url.
.
http://server.conf/settings-{mac}
#
U 172.23.56.1:5060 -> 192.168.1.152:57145 #4
NOTIFY sip:192.168.1.152:57145 SIP/2.0.
Via: SIP/2.0/UDP
192.168.1.156:5060;branch=z9hG4bKdb57.88b81c37000000000000000000000000.0.
To: <sip:MAC%3a0004137120D8@lan>;tag=1881587606.
From: <MAC%3a0004137120D8>;tag=da567df9df3ac234e43969a051db4641-6c90.
CSeq: 10 NOTIFY.
Call-ID: 1699827764(a)192.168.1.152.
Max-Forwards: 70.
Content-Length: 33.
User-Agent: kamailio (5.2.5 (x86_64/linux)).
Subscription-State: terminated;reason=timeout.
Event:
ua-profile;profile-type="device";vendor="snom";model="snom760";version="8.9.3.80".
Content-Type: application/url.
.
http://server.conf/settings-{mac}
#

….

But what did help in this particular case is to change the order of the listen
Interfaces:

From:

listen=udp:172.23.56.1:5060 <udp:172.23.56.1:5060> advertise 192.168.1.156:5060
listen=udp:192.168.1.156:5060 <udp:192.168.1.156:5060> advertise 192.168.1.156:5060
listen=tcp:127.0.0.1:5060          

mcast="eth0"
listen=udp:224.0.1.75:5060 <udp:224.0.1.75:5060>

To:

listen=udp:192.168.1.156:5060 <udp:192.168.1.156:5060> advertise 192.168.1.156:5060
listen=udp:172.23.56.1:5060 <udp:172.23.56.1:5060> advertise 192.168.1.156:5060
listen=tcp:127.0.0.1:5060          

mcast="eth0"
listen=udp:224.0.1.75:5060 <udp:224.0.1.75:5060>

Although this workaround works here, it is difficult in cases when sending events to
different networks.
(for example check-sync events).

...
  Am 30.03.2020 um 19:01 schrieb Daniel-Constantin
Mierla &lt;miconda(a)gmail.com&gt;om>:

 Hello,

 On 30.03.20 18:41, Jan-Hendrik Dörner wrote:
  Hello Daniel,

 thank you for your reply.

 I changed the line mentioned to
 t_uac_send("NOTIFY", "$(ct{s.substr,1,0}{s.striptail,1})",
"$su", "192.168.1.156","Call-ID:
$hdr(Call-ID)\r\nSubscription-State: terminated;reason=timeout\r\nEvent:
$hdr(Event)\r\nContent-Type: application/url\r\nFrom: $fU\r\nTo: $hdr(From)",
"http://server.conf/settings-{mac}
<http://server.conf/settings-%7Bmac%7D>"); 

 the result is:
 3) Call-ID is fine now ; Problem solved :-)  OK.

 1) The Via IP is now changed to the IP and port of the server, but not to the IP of the
phone.   Actually that is the correct value, Via is the address of the entity
sending out the request. It is used to route the replies, so Via in Notify has to be the
address of the kamailio server so the reply to it is sent by the phone back to Kamailio.

 2) The sending interface  / IP is not correct: It now sends _only_ from the wrong IP !!
 Can you try with full specs for socket, like "upd:IP:port"?

 Cheers,
 Daniel

  As a result, it repeats sending the
NOTIFY-message over and over again since the message does not get to the phone ...
 Please see the starting of the SIP-traffic below

 U 192.168.1.152:57283 -> 224.0.1.75:5060 #53
 SUBSCRIBE sip:MAC%3a0004137120D8@lan <sip:MAC%3a0004137120D8@lan> SIP/2.0.
 Via: SIP/2.0/UDP 192.168.1.152:57283;rport.
 From: <sip:MAC%3a0004137120D8@lan
<sip:MAC%3a0004137120D8@lan>>;tag=176419003.
 To: <sip:MAC%3a0004137120D8@lan <sip:MAC%3a0004137120D8@lan>>.
 Call-ID: 277773303(a)192.168.1.152 <mailto:277773303@192.168.1.152>.
 CSeq: 1 SUBSCRIBE.
 Event:
ua-profile;profile-type="device";vendor="snom";model="snom760";version="8.9.3.80".
 Expires: 0.
 Accept: application/url.
 Contact: <sip:192.168.1.152:57283 <sip:192.168.1.152:57283>>.
 User-Agent: snom760/8.9.3.80.
 Content-Length: 0.
 .

 #
 U 192.168.1.156:5060 -> 192.168.1.152:57283 #54
 SIP/2.0 200 OK.
 Via: SIP/2.0/UDP 192.168.1.152:57283;rport=57283;received=192.168.1.152.
 From: <sip:MAC%3a0004137120D8@lan
<sip:MAC%3a0004137120D8@lan>>;tag=176419003.
 To: <sip:MAC%3a0004137120D8@lan
<sip:MAC%3a0004137120D8@lan>>;tag=fb721cde02dffb6bb099728401306798.1182.
 Call-ID: 277773303(a)192.168.1.152 <mailto:277773303@192.168.1.152>.
 CSeq: 1 SUBSCRIBE.
 Server: kamailio (5.2.5 (x86_64/linux)).
 Content-Length: 0.
 .

 #
 U 172.23.56.1:5060 -> 192.168.1.152:57283 #55
 NOTIFY sip:192.168.1.152:57283 <sip:192.168.1.152:57283> SIP/2.0.
 Via: SIP/2.0/UDP
192.168.1.156:5060;branch=z9hG4bKee8f.0ea476a1000000000000000000000000.0.
 To: <sip:MAC%3a0004137120D8@lan <sip:MAC%3a0004137120D8@lan>>;tag=176419003.
 From: <MAC%3a0004137120D8>;tag=da567df9df3ac234e43969a051db4641-9700.
 CSeq: 10 NOTIFY.
 Call-ID: 277773303(a)192.168.1.152 <mailto:277773303@192.168.1.152>.
 Max-Forwards: 70.
 Content-Length: 33.
 User-Agent: kamailio (5.2.5 (x86_64/linux)).
 Subscription-State: terminated;reason=timeout.
 Event:
ua-profile;profile-type="device";vendor="snom";model="snom760";version="8.9.3.80".
 Content-Type: application/url.
 .
 http://server.conf/settings-{mac} <http://server.conf/settings-%7Bmac%7D>
 #
 U 172.23.56.1:5060 -> 192.168.1.152:57283 #56
 NOTIFY sip:192.168.1.152:57283 <sip:192.168.1.152:57283> SIP/2.0.
 Via: SIP/2.0/UDP
192.168.1.156:5060;branch=z9hG4bKee8f.0ea476a1000000000000000000000000.0.
 To: <sip:MAC%3a0004137120D8@lan <sip:MAC%3a0004137120D8@lan>>;tag=176419003.
 From: <MAC%3a0004137120D8>;tag=da567df9df3ac234e43969a051db4641-9700.
 CSeq: 10 NOTIFY.
 Call-ID: 277773303(a)192.168.1.152 <mailto:277773303@192.168.1.152>.
 Max-Forwards: 70.
 Content-Length: 33.
 User-Agent: kamailio (5.2.5 (x86_64/linux)).
 Subscription-State: terminated;reason=timeout.
 Event:
ua-profile;profile-type="device";vendor="snom";model="snom760";version="8.9.3.80".
 Content-Type: application/url.
 .
 http://server.conf/settings-{mac} <http://server.conf/settings-%7Bmac%7D>
 #
 U 172.23.56.1:5060 -> 192.168.1.152:57283 #57
 NOTIFY sip:192.168.1.152:57283 <sip:192.168.1.152:57283> SIP/2.0.
 Via: SIP/2.0/UDP
192.168.1.156:5060;branch=z9hG4bKee8f.0ea476a1000000000000000000000000.0.
 To: <sip:MAC%3a0004137120D8@lan <sip:MAC%3a0004137120D8@lan>>;tag=176419003.
 From: <MAC%3a0004137120D8>;tag=da567df9df3ac234e43969a051db4641-9700.
 CSeq: 10 NOTIFY.
 Call-ID: 277773303(a)192.168.1.152 <mailto:277773303@192.168.1.152>.
 Max-Forwards: 70.
 Content-Length: 33.
 User-Agent: kamailio (5.2.5 (x86_64/linux)).
 Subscription-State: terminated;reason=timeout.
 Event:
ua-profile;profile-type="device";vendor="snom";model="snom760";version="8.9.3.80".
 Content-Type: application/url.
 .
 http://server.conf/settings-{mac} <http://server.conf/settings-%7Bmac%7D>
 #
 U 192.168.1.152:57283 -> 224.0.1.75:5060 #58
 SUBSCRIBE sip:MAC%3a0004137120D8@lan <sip:MAC%3a0004137120D8@lan> SIP/2.0.
 Via: SIP/2.0/UDP 192.168.1.152:57283;rport.
 From: <sip:MAC%3a0004137120D8@lan
<sip:MAC%3a0004137120D8@lan>>;tag=1472545741.
 To: <sip:MAC%3a0004137120D8@lan <sip:MAC%3a0004137120D8@lan>>.
 Call-ID: 1886698335(a)192.168.1.152 <mailto:1886698335@192.168.1.152>.
 CSeq: 1 SUBSCRIBE.
 Event:
ua-profile;profile-type="device";vendor="snom";model="snom760";version="8.9.3.80".
 Expires: 0.
 Accept: application/url.
 Contact: <sip:192.168.1.152:57283 <sip:192.168.1.152:57283>>.
 User-Agent: snom760/8.9.3.80.
 Content-Length: 0.
 .

 #
 U 192.168.1.156:5060 -> 192.168.1.152:57283 #59
 SIP/2.0 200 OK.
 Via: SIP/2.0/UDP 192.168.1.152:57283;rport=57283;received=192.168.1.152.
 From: <sip:MAC%3a0004137120D8@lan
<sip:MAC%3a0004137120D8@lan>>;tag=1472545741.
 To: <sip:MAC%3a0004137120D8@lan
<sip:MAC%3a0004137120D8@lan>>;tag=fb721cde02dffb6bb099728401306798.1182.
 Call-ID: 1886698335(a)192.168.1.152 <mailto:1886698335@192.168.1.152>.
 CSeq: 1 SUBSCRIBE.
 Server: kamailio (5.2.5 (x86_64/linux)).
 Content-Length: 0.
 .

 #
 U 172.23.56.1:5060 -> 192.168.1.152:57283 #60
 NOTIFY sip:192.168.1.152:57283 <sip:192.168.1.152:57283> SIP/2.0.
 Via: SIP/2.0/UDP
192.168.1.156:5060;branch=z9hG4bKa0df.967a0433000000000000000000000000.0.
 To: <sip:MAC%3a0004137120D8@lan
<sip:MAC%3a0004137120D8@lan>>;tag=1472545741.
 From: <MAC%3a0004137120D8>;tag=da567df9df3ac234e43969a051db4641-d106.
 CSeq: 10 NOTIFY.
 Call-ID: 1886698335(a)192.168.1.152 <mailto:1886698335@192.168.1.152>.
 Max-Forwards: 70.
 Content-Length: 33.
 User-Agent: kamailio (5.2.5 (x86_64/linux)).
 Subscription-State: terminated;reason=timeout.
 Event:
ua-profile;profile-type="device";vendor="snom";model="snom760";version="8.9.3.80".
 Content-Type: application/url.
 .
 http://server.conf/settings-{mac} <http://server.conf/settings-%7Bmac%7D>
 #
 U 172.23.56.1:5060 -> 192.168.1.152:57283 #61
 NOTIFY sip:192.168.1.152:57283 <sip:192.168.1.152:57283> SIP/2.0.
 Via: SIP/2.0/UDP
192.168.1.156:5060;branch=z9hG4bKa0df.967a0433000000000000000000000000.0.
 To: <sip:MAC%3a0004137120D8@lan
<sip:MAC%3a0004137120D8@lan>>;tag=1472545741.
 From: <MAC%3a0004137120D8>;tag=da567df9df3ac234e43969a051db4641-d106.
 CSeq: 10 NOTIFY.
 Call-ID: 1886698335(a)192.168.1.152 <mailto:1886698335@192.168.1.152>.
 Max-Forwards: 70.
 Content-Length: 33.
 User-Agent: kamailio (5.2.5 (x86_64/linux)).
 Subscription-State: terminated;reason=timeout.
 Event:
ua-profile;profile-type="device";vendor="snom";model="snom760";version="8.9.3.80".
 Content-Type: application/url.
 .
 http://server.conf/settings-{mac} <http://server.conf/settings-%7Bmac%7D>
 #

 (If I change the IP-parameter to "172.23.56.1" the resulting sending IP is
unchanged!)

  Am 30.03.2020 um 16:17 schrieb Daniel-Constantin
Mierla &lt;miconda(a)gmail.com <mailto:miconda@gmail.com>>:

 Hello,

 On 30.03.20 12:07, Jan-Hendrik Dörner wrote:
  Hallo,

 several telephones send a SIP-multicast SUBSCRIBE message to address 224.0.1.75 if they
have no settings-URL configured and receive none over DHCP.

 So I configure my kamailio server, to respond to that multicast-request.
 But: Although mine is working, I do feel it could be improved, since the NOTIFY packet
send out is  not quite as it should be …

 Here is what I did (the 172.23.56.1 is my voip-vlan-address)

 listen=udp:172.23.56.1:5060 <udp:172.23.56.1:5060> advertise 192.168.1.156:5060
 listen=udp:192.168.1.156:5060 <udp:192.168.1.156:5060> advertise
192.168.1.156:5060
 listen=tcp:127.0.0.1:5060          

 mcast="eth0"
 listen=udp:224.0.1.75:5060 <udp:224.0.1.75:5060>

 ….

   if ($Ri == "224.0.1.75"){
        if(is_method("SUBSCRIBE")){
           xlog("L_INFO", "Received pnp-event from IP $si from User-Agent
$hdr(User-Agent) und User $fU\r\n" );                                           
           sl_send_reply("200", "OK");                                

           t_uac_send("NOTIFY", "$(ct{s.substr,1,0}{s.striptail,1})",
"", "","Subscription-State: terminated;reason=timeout\r\nEvent:
$hdr(Event)\r\nContent-Type: application/url\r\nFrom: $fU\r\nTo: $hdr(From)",
"http://server.conf/settings-{mac}
<http://server.conf/settings-%7Bmac%7D>");
        }else  {                                                                          

          xlog("L_INFO", "Drop message $rm from pnp-Interface \r\n"
);
       }                                          
       exit;
    }                    

 And here are the SIP-packets  I see on my server (192.168.1.156) coming from my
snom-phone (192.168.1.152).
 My problems with the NOTIFY -packets are: 
 1) How do I set the Via parameters to be the same as in the OK-reply?  
 Try to set the next hop address to "$su" and combined with 2) maybe it
 results in what you want to get.

  2) How do I send out the NOTIFY only via the
192.168.1.156 network interface?   
 Set the local socket parameter from where to send the NOTIFY.

  3) May I send out the NOTIFY with the Call-ID
from the SUBSCRIBE message? How?  

 Provide the Call-Id haeder as part of the headers parameter:

   -
 https://www.kamailio.org/docs/modules/stable/modules/tm.html#tm.f.t_uac_send
<https://www.kamailio.org/docs/modules/stable/modules/tm.html#tm.f.t_uac_send>

 Cheers,
 Daniel

 Any help is highly appreciated
 Jan-Hendrik

 #
 U 192.168.1.152:58714 -> 224.0.1.75:5060 #258
 SUBSCRIBE sip:MAC%3a0004137120D8@lan <sip:MAC%3a0004137120D8@lan> SIP/2.0.
 Via: SIP/2.0/UDP 192.168.1.152:58714;rport.
 From: <sip:MAC%3a0004137120D8@lan
<sip:MAC%3a0004137120D8@lan>>;tag=1750588964.
 To: <sip:MAC%3a0004137120D8@lan <sip:MAC%3a0004137120D8@lan>>.
 Call-ID: 1395386659(a)192.168.1.152 <mailto:1395386659@192.168.1.152>.
 CSeq: 1 SUBSCRIBE.
 Event:
ua-profile;profile-type="device";vendor="snom";model="snom760";version="8.9.3.80".
 Expires: 0.
 Accept: application/url.
 Contact: <sip:192.168.1.152:58714 <sip:192.168.1.152:58714>>.
 User-Agent: snom760/8.9.3.80.
 Content-Length: 0.
 .

 #
 U 192.168.1.156:5060 -> 192.168.1.152:58714 #259
 SIP/2.0 200 OK.
 Via: SIP/2.0/UDP 192.168.1.152:58714;rport=58714;received=192.168.1.152.
 From: <sip:MAC%3a0004137120D8@lan
<sip:MAC%3a0004137120D8@lan>>;tag=1750588964.
 To: <sip:MAC%3a0004137120D8@lan
<sip:MAC%3a0004137120D8@lan>>;tag=fb721cde02dffb6bb099728401306798.2f00.
 Call-ID: 1395386659(a)192.168.1.152 <mailto:1395386659@192.168.1.152>.
 CSeq: 1 SUBSCRIBE.
 Server: kamailio (5.2.5 (x86_64/linux)).
 Content-Length: 0.
 .

 #
 U 192.168.1.156:5060 -> 192.168.1.152:58714 #260
 NOTIFY sip:192.168.1.152:58714 <sip:192.168.1.152:58714> SIP/2.0.
 Via: SIP/2.0/UDP 224.0.1.75;branch=z9hG4bKf21c.917eaf36000000000000000000000000.0.
 To: <sip:MAC%3a0004137120D8@lan
<sip:MAC%3a0004137120D8@lan>>;tag=1750588964.
 From: <MAC%3a0004137120D8>;tag=da567df9df3ac234e43969a051db4641-8cfb.
 CSeq: 10 NOTIFY.
 Call-ID: 24eaa8de01be1768-70960(a)172.23.56.1
<mailto:24eaa8de01be1768-70960@172.23.56.1>.
 Max-Forwards: 70.
 Content-Length: 33.
 User-Agent: kamailio (5.2.5 (x86_64/linux)).
 Subscription-State: terminated;reason=timeout.
 Event:
ua-profile;profile-type="device";vendor="snom";model="snom760";version="8.9.3.80".
 Content-Type: application/url.
 .
 http://server.conf/settings-{mac} <http://server.conf/settings-%7Bmac%7D>
 #
 U 172.23.56.1:5060 -> 192.168.1.152:58714 #261
 NOTIFY sip:192.168.1.152:58714 <sip:192.168.1.152:58714> SIP/2.0.
 Via: SIP/2.0/UDP 224.0.1.75;branch=z9hG4bKf21c.917eaf36000000000000000000000000.0.
 To: <sip:MAC%3a0004137120D8@lan
<sip:MAC%3a0004137120D8@lan>>;tag=1750588964.
 From: <MAC%3a0004137120D8>;tag=da567df9df3ac234e43969a051db4641-8cfb.
 CSeq: 10 NOTIFY.
 Call-ID: 24eaa8de01be1768-70960(a)172.23.56.1
<mailto:24eaa8de01be1768-70960@172.23.56.1>.
 Max-Forwards: 70.
 Content-Length: 33.
 User-Agent: kamailio (5.2.5 (x86_64/linux)).
 Subscription-State: terminated;reason=timeout.
 Event:
ua-profile;profile-type="device";vendor="snom";model="snom760";version="8.9.3.80".
 Content-Type: application/url.
 .
 http://server.conf/settings-{mac} <http://server.conf/settings-%7Bmac%7D>
 #
 U 172.23.56.1:5060 -> 192.168.1.152:58714 #262
 NOTIFY sip:192.168.1.152:58714 <sip:192.168.1.152:58714> SIP/2.0.
 Via: SIP/2.0/UDP 224.0.1.75;branch=z9hG4bKf21c.917eaf36000000000000000000000000.0.
 To: <sip:MAC%3a0004137120D8@lan>
<sip:MAC%3a0004137120D8@lan>;tag=1750588964.
 From: <MAC%3a0004137120D8>;tag=da567df9df3ac234e43969a051db4641-8cfb.
 CSeq: 10 NOTIFY.
 Call-ID: 24eaa8de01be1768-70960(a)172.23.56.1
<mailto:24eaa8de01be1768-70960@172.23.56.1>.
 Max-Forwards: 70.
 Content-Length: 33.
 User-Agent: kamailio (5.2.5 (x86_64/linux)).
 Subscription-State: terminated;reason=timeout.
 Event:
ua-profile;profile-type="device";vendor="snom";model="snom760";version="8.9.3.80".
 Content-Type: application/url.
 .
 http://server.conf/settings <http://server.conf/settings>-{mac}
 #
 U 192.168.1.152:58714 -> 224.0.1.75:5060 #263
 SUBSCRIBE sip:MAC%3a0004137120D8@lan <sip:MAC%3a0004137120D8@lan> SIP/2.0.
 Via: SIP/2.0/UDP 192.168.1.152:58714;rport.
 From: <sip:MAC%3a0004137120D8@lan>
<sip:MAC%3a0004137120D8@lan>;tag=1971605806.
 To: <sip:MAC%3a0004137120D8@lan> <sip:MAC%3a0004137120D8@lan>.
 Call-ID: 1846532696(a)192.168.1.152 <mailto:1846532696@192.168.1.152>.
 CSeq: 1 SUBSCRIBE.
 Event:
ua-profile;profile-type="device";vendor="snom";model="snom760";version="8.9.3.80".
 Expires: 0.
 Accept: application/url.
 Contact: <sip:192.168.1.152:58714> <sip:192.168.1.152:58714>.
 User-Agent: snom760/8.9.3.80.
 Content-Length: 0.
 .

 #
 U 192.168.1.156:5060 -> 192.168.1.152:58714 #264
 SIP/2.0 200 OK.
 Via: SIP/2.0/UDP 192.168.1.152:58714;rport=58714;received=192.168.1.152.
 From: <sip:MAC%3a0004137120D8@lan>
<sip:MAC%3a0004137120D8@lan>;tag=1971605806.
 To: <sip:MAC%3a0004137120D8@lan>
<sip:MAC%3a0004137120D8@lan>;tag=fb721cde02dffb6bb099728401306798.2f00.
 Call-ID: 1846532696(a)192.168.1.152 <mailto:1846532696@192.168.1.152>.
 CSeq: 1 SUBSCRIBE.
 Server: kamailio (5.2.5 (x86_64/linux)).
 Content-Length: 0.
 .

 #
 U 192.168.1.156:5060 -> 192.168.1.152:58714 #265
 NOTIFY sip:192.168.1.152:58714 <sip:192.168.1.152:58714> SIP/2.0.
 Via: SIP/2.0/UDP 224.0.1.75;branch=z9hG4bK201a.063839a4000000000000000000000000.0.
 To: <sip:MAC%3a0004137120D8@lan>
<sip:MAC%3a0004137120D8@lan>;tag=1971605806.
 From: <MAC%3a0004137120D8>;tag=da567df9df3ac234e43969a051db4641-f31b.
 CSeq: 10 NOTIFY.
 Call-ID: 24eaa8de01be1768-70963(a)172.23.56.1
<mailto:24eaa8de01be1768-70963@172.23.56.1>.
 Max-Forwards: 70.
 Content-Length: 33.
 User-Agent: kamailio (5.2.5 (x86_64/linux)).
 Subscription-State: terminated;reason=timeout.
 Event:
ua-profile;profile-type="device";vendor="snom";model="snom760";version="8.9.3.80".
 Content-Type: application/url.
 .
 http://server.conf/settings <http://server.conf/settings>-{mac}
 #
 U 192.168.1.152:58714 -> 192.168.1.156:5060 #266
 SIP/2.0 200 Ok.
 Via: SIP/2.0/UDP
224.0.1.75;branch=z9hG4bKf21c.917eaf36000000000000000000000000.0;received=192.168.1.156.
 From: <MAC:0004137120D8>;tag=da567df9df3ac234e43969a051db4641-8cfb.
 To: <sip:MAC%3A0004137120D8@lan>
<sip:MAC%3A0004137120D8@lan>;tag=1750588964.
 Call-ID: 24eaa8de01be1768-70960(a)172.23.56.1
<mailto:24eaa8de01be1768-70960@172.23.56.1>.
 CSeq: 10 NOTIFY.
 User-Agent: snom760/8.9.3.80.
 Content-Length: 0.
 .

 #
 U 192.168.1.152:58714 -> 192.168.1.156:5060 #267
 SIP/2.0 200 Ok.
 Via: SIP/2.0/UDP
224.0.1.75;branch=z9hG4bKf21c.917eaf36000000000000000000000000.0;received=192.168.1.156.
 From: <MAC:0004137120D8>;tag=da567df9df3ac234e43969a051db4641-8cfb.
 To: <sip:MAC%3A0004137120D8@lan>
<sip:MAC%3A0004137120D8@lan>;tag=1750588964.
 Call-ID: 24eaa8de01be1768-70960(a)172.23.56.1
<mailto:24eaa8de01be1768-70960@172.23.56.1>.
 CSeq: 10 NOTIFY.
 User-Agent: snom760/8.9.3.80.
 Content-Length: 0.
 .

 #
 U 192.168.1.152:58714 -> 192.168.1.156:5060 #268
 SIP/2.0 200 Ok.
 Via: SIP/2.0/UDP
224.0.1.75;branch=z9hG4bK201a.063839a4000000000000000000000000.0;received=192.168.1.156.
 From: <MAC:0004137120D8>;tag=da567df9df3ac234e43969a051db4641-f31b.
 To: <sip:MAC%3A0004137120D8@lan>
<sip:MAC%3A0004137120D8@lan>;tag=1971605806.
 Call-ID: 24eaa8de01be1768-70963(a)172.23.56.1
<mailto:24eaa8de01be1768-70963@172.23.56.1>.
 CSeq: 10 NOTIFY.
 User-Agent: snom760/8.9.3.80.
 Content-Length: 0.
 .

 _______________________________________________
 Kamailio (SER) - Users Mailing List
 sr-users(a)lists.kamailio.org <mailto:sr-users@lists.kamailio.org>
 https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
<https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users>  
 -- 
 Daniel-Constantin Mierla -- www.asipto.com <http://www.asipto.com/>
 www.twitter.com/miconda <http://www.twitter.com/miconda> --
www.linkedin.com/in/miconda <http://www.linkedin.com/in/miconda>  

 _______________________________________________
 Kamailio (SER) - Users Mailing List
 sr-users(a)lists.kamailio.org <mailto:sr-users@lists.kamailio.org>
 https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
<https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users>  -- 
 Daniel-Constantin Mierla -- www.asipto.com <http://www.asipto.com/>
 www.twitter.com/miconda <http://www.twitter.com/miconda> --
www.linkedin.com/in/miconda <http://www.linkedin.com/in/miconda> 

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Re: [SR-Users] How to correctly answer a PnP-SUBSCRIBE message