I've got a customer using T26 with firmware 60.70.23.2
Problem being experienced is when dialling via DSS key in headset mode there is zero ringback tone. only indication of audio is once call is answered at remote end or if the customer manually presses answer on the headset then the ringback is heard.
Its as if the phone is not taking the headset offhook correctly once it has sent the SIP Invite or RCV'd 183 session progress
I have attached a debug from phone and router that shows ringback being supplied.
![.txt]()
t26_Headset Fail.txt (Size: 46.41 KB / Downloads: 1)
Problem being experienced is when dialling via DSS key in headset mode there is zero ringback tone. only indication of audio is once call is answered at remote end or if the customer manually presses answer on the headset then the ringback is heard.
Its as if the phone is not taking the headset offhook correctly once it has sent the SIP Invite or RCV'd 183 session progress
I have attached a debug from phone and router that shows ringback being supplied.
t26_Headset Fail.txt (Size: 46.41 KB / Downloads: 1)