This type of phone can be used for system, centralized and personal administration functions covered by this document. For system and centralized administration, the phone must be connected to one of the first two extension ports on the system.
The order of button numbering depends on the mode in which the system is running.
•For systems running in key system mode, the programmable buttons are numbered from 01 upwards from bottom to top. The first two buttons are fixed as intercom buttons Intercom 1 and Intercom 2.
•For systems running in PBX system mode, the programmable buttons are numbered from 01 upwards top to bottom. The first three buttons are fixed as call appearance buttons.
Additional buttons can be added by the addition of up to 3 DBM32 button modules, each module providing 32 programmable buttons. On the button modules, buttons are numbered from top down or bottom up depending on the system mode and then left to right.