When phone 1 dials into the system and phone2 picks up the call through grouppickup (by dialing *98 for example), phone 1 is not able to hear anything but there is audio on phone 2. Looking at the sip trace when phone 2 dial in (with g722 priority) server OKs the call with g722. And the reinvite sent back to phone1 to connect the audio has sdp ( payload 9 8 18) and phone1 OK the call with g729 where the other side of the call was g722.
phone2 can hear, but phone 1 has no audio since it is negotiated g729 but not g722 even if the reinvite has priority 9.
I'm wondering why phone2 sends 200 OK with 18 and not 9 when it received reINVITE for 9. Other phone (polycoms and aastras) works fine as it 200 OKs the call with payload 9 after the reinvite from broadworks. I dont want to use Use_Pref_Codec_Only.
Configure Multicast Paging on the Cisco IP Phone 7800 Series or 8800 Series Multiplatform Phone
The Cisco IP Phone 7800 and 8800 Series Multiplatform Phones provide voice communication over an Internet Protocol (IP) network...
Add Call Park on a Cisco 7800 or 8800 Series Multiplatform Phone Key Expansion Module
Call park allows the user of the phone to put an incoming call on hold so that the call can be retrieved on another phone. A call is park...