Installing IP500/IP500 V2 Page 325
15-601042 Issue 28c (19 August 2013)IP Office 9.0
System Components: Phones
10.11.44 9508
9500 Series phones are supported by IP Office Release 7.0 and higher.
The phones provide 8 physical buttons with red and green LEDs. These can be used for up to 24 programmable features.
The phones support the addition of up to 3 BM12 button modules supporting an additional 24 programmable features
(using 12 buttons) per module.