System interfaces
45
System functions and features as of R3.0
syd-0367/1.3 – R3.0 – 03.2013
2. 3. 2 Interface for door intercom system
There are different ways of connecting door intercom systems:
• Using an options card ODAB (only Aastra 415/430)
• Using an ordinary analogue terminal port
In a connection using an options card, the equipment or installation is controlled
via relays and a control input on the options card.
In a connection using an analogue terminal port the TFE must be capable of send-
ing and receiving DTMF signals as the control is effected acoustically via a speech
path.
A bell key is backed by an internal destination. The door intercom system can be
addressed via an internal number.
A loudspeaker system can also be operated via the interface for door intercom sys-
tems.
See also:
"Special interfaces" Chapter in the Aastra 415/430 or Aastra 470. System
Manual
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