The addition of a button module allows the phone to support additional programmable buttons.
•Do not connect or disconnect a button module yourself. Your system administrator will arrange this if necessary. Failure to connect and restart the equipment in the correct order may cause the phone and or the button module to function incorrectly.
Up to three button modules can be attached to each phone. However, the number of button modules supported by the telephone system may be limited by the total number of button modules attached to other phones on the telephone system.
These phones do not support any additional button modules.
Note for Australian installations only:
Installations of the telephone with button module and additional power supply is restricted to the same building as the host IP Office. In this scenario the phone cannot be connected installed in a separate building separate from the IP Office using out-of-building wiring. This restriction applies to Australian installations only.