Aastra OpenCom 100 series User Manual

Installation
55
Note
DECT base stations cannot be operated on the U
pn
ports of the basic module of an
OpenCom 130. This is only possible for U
pn
ports on the interface cards of the ex-
pansion module.
Note
Only the system telephones Aastra 6771 / 6773 / 6775 (OpenPhone 71 / 73 / 75) and
OpenPhone 61 / 63 / 65 can be operated on the U
pn
ports of an OpenCom 131. Op-
erating a DECT base station is not possible on these U
pn
ports.
The maximum permissible length of the twin-wire cable on a U
pn
port is 500 m. This
line may only be laid inside buildings.
The maximum permissible length of the twin-wire cable on a U
pn
port of an interface
card is 1,000 m when 0.6 mm cable (with twisted pairs) is used (these interface cards
are available for an OpenCom 130 / 150).
The power consumption of each U
pn
port is approx. 3 W.
Pin assignment of the S0 and Upn ports
a/b Ports
The a/b ports are for operating analogue devices (e.g. a fax machine, modem or tele-
phone). The maximum permissible length of the cable is 1,000 m when twin-wire
0.6 mm cable (with twisted pairs) is used.
Doorstation equipment can be activated on an a/b1 port (OpenCom 130,
OpenCom 131). In this case, an electronic switch enables the low-frequency voltage
to be separated from the feed.
S
0
int
2a 2b 1a 1b
12345678
RFP with 2 U
pn
12345678
U
pn
/RFP with 1 U
pn
12345678

Aastra OpenCom 100 series Specifications

General

Brand	Aastra
Model	OpenCom 100 series
Category	PBX
Language	English