New Forum system requires email address which you used to apply for your account to replace your original username. Password stays the same.Please see this post for more details

Yealink Test Club has been officially launched. Please visit post below to get detail information. Come and join us!

We just had the YMCS online and we are also working on the features plan on the future versions, in this regard we are need to hear your voice about the YMCS.
Please visit :

Post Reply 
Thread Rating:
  • 0 Votes - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
SIP Notify Answer event on T41
Author Message
DMC_Support Offline
Junior Member

Posts: 3
Joined: Aug 2017
Reputation: 0
Post: #1
SIP Notify Answer event on T41

The SIP Notify Answer event does not work on Yealink T4 phones running Firmware v80 or v81. It does work on Firmware v71.

Steps to reproduce (on a phone running v81 firmware):

1) Register a T4 (e.g. T41P) to an Asterisk system. I used FreePBX 13.14.0 with chan_pjsip.

2) Configure the SIP Notify as follows:



3) Restart Asterisk

4) Place a call to the endpoint

5) Send a SIP notify to Asterisk:

pjsip send notify yealink-answer endpoint 1011

6) The phone will not do anything although it does send a 200 OK response to the Asterisk system.

I downgraded the firmware to v80. I had the same problem.

I downgraded the firmware to v71. The SIP Notify Answer event worked as expected.

I have tested this on a T41 and a T46.

I have also tried using the talk event:


Has this function been deprecated or changed or is this a bug ?

Please let me know if you require any further information.

DMC Support
08-03-2017 04:32 PM
Find all posts by this user    like0    dislike0 Quote this message in a reply
Post Reply 

Messages In This Thread
SIP Notify Answer event on T41 - DMC_Support - 08-03-2017 04:32 PM

Possibly Related Threads...
Thread: Author Replies: Views: Last Post
Question Auto answer and auto hold Ryanjs 7 4,134 09-11-2019 04:04 PM
Last Post: Chris708
  Answer remotely anksharmoli 2 316 09-11-2019 04:00 PM
Last Post: Chris708
  Best practices to notify unconditional call forwarding with Asterisk oliv 1 279 08-16-2019 10:07 PM
Last Post: jolouis
  T41P - Pressing Phone Line to Answer Call thenz 1 1,586 09-13-2017 07:09 AM
Last Post: Aishion_Yealink
  SIP Notify Answer event on T4 range DMC_Support 2 1,917 08-10-2017 05:43 AM
Last Post: DMC_Support
  T46G Firmware disables the intercom auto-answer function KenDoerksen 11 13,464 07-28-2017 06:05 AM
Last Post: Lucia_Yealink
  T42G Trigger action by event U 1 1,772 07-10-2017 03:32 AM
Last Post: Paul_Yealink
  T42G not sending auto-answer alaert Melissa:) 3 4,497 06-15-2017 01:27 AM
Last Post: Travis_Yealink
  T4X no beep on intercom answer jcaruso 1 1,934 03-23-2017 09:38 AM
Last Post: Lucia_Yealink
  T48G Intercom Auto-answer cm21 14 14,282 03-06-2017 08:48 PM
Last Post: engine411

Forum Jump:

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

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