This guide is for 9500 Series telephones running on IP Office Release 11.0 or higher software. If unsure if this is the correct guide for your system, contact your system administrator.
•9500 Series Telephones
The 9504 and 9508 phones are supported on IP Office systems only. They are physically and functionally the same as their 9400 Series equivalents but are not supported on other Avaya telephone systems.