SSS Siedle AIB 150 Series System Manual page 100

7.1 Programming – manual
Internal call
Tel. 1
7 At the first bus telephone, hold
down the internal call button you
wish to use to call the second bus
telephone for 4 seconds.
A protracted tone is audible. The bus
telephone is now programmed. Do
not yet replace the receiver.
10 Switch off the programming
mode at the BNG/BVNG 650-...
100
Tel. 2
8 At the second bus telephone, hold
down the internal call button you
wish to use to call the first bus tele-
phone for 4 seconds.
A protracted tone is audible.
The buttons are now programmed at
both bus telephones.
9 Replace the receiver at both bus
telephones. Program additional bus
telephones using the same proce-
dure or quit the programming mode.