Avaya has released SIP software release 4.3 for their 1100 and 1200 series IP deskphones.
This software release is compatible with the following Call Server platforms;
- Avaya IP Office R8.0 (1220, 1230, 1120E, 1140E IP Deskphones only)
- Avaya CS1000 R7.0 and 7.5
- Avaya CS2100 SE13
- Avaya Aura® Communications Manager 6.0
- Avaya Aura® Session Manager 6.0
I’ll refer you to the release notes for all the details.