For IP Office Release 6.1 and higher, selected phones from the Avaya 1100 Series and 1200 Series are supported on IP Office systems. These are the only phones from the 1100 and 1200 Series that are supported.
1120E Telephone
1140E Telephone
1220 Telephone
1230 Telephone
•1100 Series
The 1120E and 1140E are supported. The 1100 Series 18 button Key Expansion Module is also supported, with up to 3 modules attached to a phone.
•1200 Series
The 1220 and 1230 are supported. The 1200 Series 12 button LCD Key Expansion Module is supported as well, with up to 7 modules attached to a phone. The 1200 Series 18 button Key Expansion Module is also supported, with up to 3 modules attached to a phone.