Technical Information - Aastra OpenCom 510 User Manual

Interfaces and Connectible Terminals
The intercom system should be installed by qualified personnel only as sensor/
actor contacts will need to be connected to the "DoorLine" module.

5.4.2 Technical Information

The a/b ports have been implemented as RJ45 sockets. Each of the devices listed
above can be connected to the a/b interface by means of a two-wire 1:1 cable.
A two-wire cable connected to an
a/b port can be up to 6500 m long, provided it is a 0.6 mm twisted-pair cable, or up
to 3000 m if a 0.4 mm twisted-pair cable is used.
The 50 Hz/40 V AC ringing voltage of the eight interfaces is supplied by the
interface card.
Pin Assignment
1 2 3 4 5 6 7 8
a/b interface pin assignment
The following Table explains the a/b interface pin assignment.
Pin Number
1
2
3
4
5
6
7
8
50
Assignment
Not used
Not used
Not used
Channel a
Channel b
Not used
Not used
Not used
a/b Ports