[YMCS/YDMP Free Trial Program]Yealink would like to offer Free Trial Program of Yealink device management service for our current eligible customers. You can see the details below.

Post Reply 
Thread Rating:
  • 0 Votes - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
T23G and T48G Fails to include transport=tcp in contact header
Author Message
JMComstock Offline
Junior Member

Posts: 12
Joined: Jan 2015
Reputation: 0
Post: #1
T23G and T48G Fails to include transport=tcp in contact header

I'm having trouble with the new T23G phones. I'm using firmware version
The same issue is happening on T48G phones when I upgrade to firmware

I am also using NAPTR. The NAPTR resolves correctly to TCP with the correct ip and port.

When the phone registers it correctly uses a TCP port but fails to include the requisite:
"transport=tcp" in the contact header.

This cause the registration server heartburn because the connection is coming in on a TCP port but it is not specified in the header.

Here is an example from a T48G

REGISTER sip:p92dk.voiceelements.com SIP/2.0
Via: SIP/2.0/TCP;rport;branch=z9hG4bK1589095695
From: "Reception" <sip:101@p92dk.voiceelements.com>;tag=264156176
To: "Reception" <sip:101@p92dk.voiceelements.com>
Contact: <sip:101@>
Content-Length: 0

When I return to firmware, it all works correctly.

REGISTER sip:p92dk.voiceelements.com SIP/2.0
Via: SIP/2.0/TCP;rport;branch=z9hG4bK1884761878
From: "Reception" <sip:101@p92dk.voiceelements.com>;tag=2821122686
To: "Reception" <sip:101@p92dk.voiceelements.com>
Contact: <sip:101@;transport=TCP>
Content-Length: 0

Here is an example from a T23G with the incorrect header.

REGISTER sip:p92dk.voiceelements.com SIP/2.0
Via: SIP/2.0/TCP;rport;branch=z9hG4bK90124193
From: "Office" <sip:104@p92dk.voiceelements.com>;tag=2313422629
To: "Office" <sip:104@p92dk.voiceelements.com>
Contact: <sip:104@>
Content-Length: 0

Problem is that I just bought a bunch of T23Gs because of discontinuing the T22P, so I am in a bind! There is no earlier firmware version to fall back on.

Please Help!!!
08-27-2015 05:54 AM
Find all posts by this user    like0    dislike0 Quote this message in a reply
Post Reply 

Messages In This Thread
T23G and T48G Fails to include transport=tcp in contact header - JMComstock - 08-27-2015 05:54 AM

Possibly Related Threads...
Thread: Author Replies: Views: Last Post
  Dial-Now fails to recognize time-out braymond 2 8,460 01-31-2023 05:33 PM
Last Post: eddie79it
  T23G Connecting PC causes "Network Unavailable" MonkeySeeMonkeyDo 0 1,583 02-15-2022 12:59 AM
Last Post: MonkeySeeMonkeyDo
  Firmware upgrade fails on T21P E2 p.pasquino@technology4you.it 0 2,870 11-02-2021 04:42 PM
Last Post: p.pasquino@technology4you.it
  T26P failed to register with TLS transport tvt 0 2,397 10-29-2021 02:58 PM
Last Post: tvt
  T21P Stuck on "Initializing" - Recovery Mode Fails` YCMJamie 5 9,209 08-24-2021 07:04 PM
Last Post: YCMJamie
  T23G does not respond to network aciacci 1 4,981 05-07-2021 12:11 AM
Last Post: complex1
  Forwarding - Action URI - T23G matiasarw 0 3,573 03-14-2021 08:13 AM
Last Post: matiasarw
  how to connect yealink T23G to mikrotik openvpn server m.taghavi 4 11,117 10-11-2020 11:31 AM
Last Post: bozko
Lightbulb Yealink T28P Firmware Upgrade Fails Michelth 11 49,989 06-27-2020 10:13 AM
Last Post: complex1
  T23G Unable to Obtain IP Address xBrito 6 13,348 05-21-2020 01:05 PM
Last Post: jolouis

Forum Jump:

User(s) browsing this thread: 1 Guest(s)

Contact Us   Yealink   Return to Top   Return to Content   Lite (Archive) Mode   RSS Syndication