49
Port Assignment, Termination, Cable Length
Installation
a/b Ports
The a/b ports are for operating analogue devices (e. g. fax, modem or analogue telephone). The maximum
permissible length of the cable is 1,000 m, where a twin-wire 0.6 mm cable (with twisted wire pairs) is used.
You can then use devices for voice or data communication which use pulse dialling, or devices which use
DTMF dialling, including:
■
analogue telephones,
■
G3 fax machines,
■
analogue modems,
■
external devices for Music on Hold,
■
external mail systems.
If analogue telephones are to be used, connect the pressure terminals to a standard telephone connection
socket.
Connection using a telephone connection socket
To connect an analogue device (fax, modem), connect the pressure terminal to a connection socket for
telecommunications devices.
6
F
analogue phone
TAE-F socket
a/b port
red wire
black wire
1 2 3 4 5
Alternatively you can also use the
combination of wires white/yellow.
cable: max. 1000 m
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