Yealink Forums

Yealink Forums > IP Phone Series > Phone specific topic > T2xP Series > T19P E2 identifies itself as wrong User - from TO header of incoming request
Full Version: T19P E2 identifies itself as wrong User - from TO header of incoming request
You're currently viewing a stripped down version of our content. View the full version with proper formatting.

ivanp

05-02-2017, 10:29 PM
We are testing T19P E2 phone running firmware 53.80.0.80 and found the following issue: it seems when T19P E2 responds to an incoming SIP message (such as INVITE) it just copies User part of the URI from the TO header into Contact header of the response, which is fundamentally wrong. SIP endpoint (the handset) should rather present itself in the Contact header of the response according to provisioned configuration. Instead it uses whatever comes in the TO header - this could be anything and will cause problems one way or another.
Example is provided below:

1) Relevant part of the configuration file we used to provision this phone:

account.1.label = LCD 2719
account.1.display_name = LCD 2719
account.1.user_name = 2719

account.1.sip_server.1.address = 1.1.1.1
account.1.sip_server.1.port = 5060


2) Request to REGISTER from the phone (note "2719" in the Contact header):

REGISTER sip:1.1.1.1:5060 SIP/2.0
Via: SIP/2.0/UDP 2.2.2.2:5060;branch=z9hG4bK3100258795
Contact: <sip:2719@2.2.2.2:5060>
Call-ID: 0_1730271111@2.2.2.2
CSeq: 1 REGISTER
From: "LCD 2719" <sip:2719@1.1.1.1:5060>;tag=2003548043
To: "LCD 2719" <sip:2719@1.1.1.1:5060>
Content-Length: 0
Expires: 3600
User-Agent: Yealink SIP-T19P_E2 53.80.0.80
Allow: INVITE, INFO, PRACK, ACK, BYE, CANCEL, OPTIONS, NOTIFY, REGISTER, SUBSCRIBE, REFER, PUBLISH, UPDATE, MESSAGE
Max-Forwards: 70
Allow-Events: talk,hold,conference,refer,check-sync


3) Incoming INVITE (note that TO header is different from the URI above, and TO can be literally anything!)

INVITE sip:2719@2.2.2.2:5060 SIP/2.0
Via: SIP/2.0/UDP 1.1.1.1:5060;rport;branch=z9hG4bKylwlx8pz
Via:SIP/2.0/UDP 1.1.1.1:5062;branch=z9hG4bKdd*ftgd*;received=1.1.1.1;rport=5062
Contact: "1234 (Outside)"<sip:1234@3.3.3.3:5060>
Record-Route: <sip:1.1.1.1:5060;lr>
Record-Route: <sip:1.1.1.1:5062;lr>
Remote-Party-ID: "1234 (Outside)" <sip:1234@1.1.1.1:5060>;party=calling;id-type=subscriber;privacy=off
Call-ID: bj.2c2hzoz3u
CSeq: 1 INVITE
From: "1234 (Outside)"<sip:1234@1.1.1.1>;tag=jitb*hy_
To: <sip:72719@1.1.1.1:5060>
Content-Length: 207
Content-Type: application/sdp
User-Agent: some user agent
Accept: application/sdp
Max-Forwards: 19
Session-ID: 0194c712746c47d9e5848c634e6e3ef4


4) Response from T19P E2 (note that User part of the CONTACT header is a copied from the TO header of the INVITE)

SIP/2.0 180 Ringing
Via: SIP/2.0/UDP 1.1.1.1:5060;rport=5060;branch=z9hG4bKylwlx8pz
Via: SIP/2.0/UDP 1.1.1.1:5062;branch=z9hG4bKdd*ftgd*;received=1.1.1.1;rport=5062
Contact: <sip:72719@2.2.2.2:5060>
Record-Route: <sip:1.1.1.1:5060;lr>
Record-Route: <sip:1.1.1.1:5062;lr>
Call-ID: bj.2c2hzoz3u
CSeq: 1 INVITE
From: "1234 (Outside)" <sip:1234@1.1.1.1>;tag=jitb*hy_
To: <sip:72719@1.1.1.1:5060>;tag=3379432752
Content-Length: 0
User-Agent: Yealink SIP-T19P_E2 53.80.0.80
Allow: INVITE, INFO, PRACK, ACK, BYE, CANCEL, OPTIONS, NOTIFY, REGISTER, SUBSCRIBE, REFER, PUBLISH, UPDATE, MESSAGE
Allow-Events: talk,hold,conference,refer,check-sync

Travis_Yealink

05-04-2017, 09:13 AM
(05-02-2017 10:29 PM)ivanp Wrote: [ -> ]We are testing T19P E2 phone running firmware 53.80.0.80 and found the following issue: it seems when T19P E2 responds to an incoming SIP message (such as INVITE) it just copies User part of the URI from the TO header into Contact header of the response, which is fundamentally wrong. SIP endpoint (the handset) should rather present itself in the Contact header of the response according to provisioned configuration. Instead it uses whatever comes in the TO header - this could be anything and will cause problems one way or another.
Example is provided below:

1) Relevant part of the configuration file we used to provision this phone:

account.1.label = LCD 2719
account.1.display_name = LCD 2719
account.1.user_name = 2719

account.1.sip_server.1.address = 1.1.1.1
account.1.sip_server.1.port = 5060


2) Request to REGISTER from the phone (note "2719" in the Contact header):

REGISTER sip:1.1.1.1:5060 SIP/2.0
Via: SIP/2.0/UDP 2.2.2.2:5060;branch=z9hG4bK3100258795
Contact: <sip:2719@2.2.2.2:5060>
Call-ID: 0_1730271111@2.2.2.2
CSeq: 1 REGISTER
From: "LCD 2719" <sip:2719@1.1.1.1:5060>;tag=2003548043
To: "LCD 2719" <sip:2719@1.1.1.1:5060>
Content-Length: 0
Expires: 3600
User-Agent: Yealink SIP-T19P_E2 53.80.0.80
Allow: INVITE, INFO, PRACK, ACK, BYE, CANCEL, OPTIONS, NOTIFY, REGISTER, SUBSCRIBE, REFER, PUBLISH, UPDATE, MESSAGE
Max-Forwards: 70
Allow-Events: talk,hold,conference,refer,check-sync


3) Incoming INVITE (note that TO header is different from the URI above, and TO can be literally anything!)

INVITE sip:2719@2.2.2.2:5060 SIP/2.0
Via: SIP/2.0/UDP 1.1.1.1:5060;rport;branch=z9hG4bKylwlx8pz
Via:SIP/2.0/UDP 1.1.1.1:5062;branch=z9hG4bKdd*ftgd*;received=1.1.1.1;rport=5062
Contact: "1234 (Outside)"<sip:1234@3.3.3.3:5060>
Record-Route: <sip:1.1.1.1:5060;lr>
Record-Route: <sip:1.1.1.1:5062;lr>
Remote-Party-ID: "1234 (Outside)" <sip:1234@1.1.1.1:5060>;party=calling;id-type=subscriber;privacy=off
Call-ID: bj.2c2hzoz3u
CSeq: 1 INVITE
From: "1234 (Outside)"<sip:1234@1.1.1.1>;tag=jitb*hy_
To: <sip:72719@1.1.1.1:5060>
Content-Length: 207
Content-Type: application/sdp
User-Agent: some user agent
Accept: application/sdp
Max-Forwards: 19
Session-ID: 0194c712746c47d9e5848c634e6e3ef4


4) Response from T19P E2 (note that User part of the CONTACT header is a copied from the TO header of the INVITE)

SIP/2.0 180 Ringing
Via: SIP/2.0/UDP 1.1.1.1:5060;rport=5060;branch=z9hG4bKylwlx8pz
Via: SIP/2.0/UDP 1.1.1.1:5062;branch=z9hG4bKdd*ftgd*;received=1.1.1.1;rport=5062
Contact: <sip:72719@2.2.2.2:5060>
Record-Route: <sip:1.1.1.1:5060;lr>
Record-Route: <sip:1.1.1.1:5062;lr>
Call-ID: bj.2c2hzoz3u
CSeq: 1 INVITE
From: "1234 (Outside)" <sip:1234@1.1.1.1>;tag=jitb*hy_
To: <sip:72719@1.1.1.1:5060>;tag=3379432752
Content-Length: 0
User-Agent: Yealink SIP-T19P_E2 53.80.0.80
Allow: INVITE, INFO, PRACK, ACK, BYE, CANCEL, OPTIONS, NOTIFY, REGISTER, SUBSCRIBE, REFER, PUBLISH, UPDATE, MESSAGE
Allow-Events: talk,hold,conference,refer,check-sync

Hi,

We met similar case before, but unsure if it's the same cause.

Suggest you kindly upgarde the firmware to the newest and reset the phone to factory and test again:
http://support.yealink.com/documentFront...umentId=78

If the issue still exist, please kindly provide all THREE trace files, so that we can help you find out the cause.
a. Level 6 syslog
b. PCAP trace
c. Config.bin
You can get the guide from this link to see how to export the issue data(trace files):
http://support.yealink.com/faq/faqInfo?id=311

Any question, freely to let me know.

Regards,
Travis
Yealink Forums > IP Phone Series > Phone specific topic > T2xP Series > T19P E2 identifies itself as wrong User - from TO header of incoming request
Reference URL's