SIP Notify Answer event on T41

[DMC_Support]

Hi,

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:

/etc/asterisk/sip_notify_custom.conf

[yealink-answer]
Event=>answer=true

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:

[yealink-talk]
Event=>talk

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

Please let me know if you require any further information.

Colin
DMC Support