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 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 from top to bottom. The first three buttons are fixed as call appearance buttons.
Key System Mode |
PBX System Mode |
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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.