Aastra OpenCom 510 - DECT Base Station Connection Variants

Interfaces and Connectible Terminals U
pn
Ports
46
5.3.3 DECT Base Station Connection Variants
A DECT base station can be connected to either one or two U
pn
interfaces:
■ If the DECT base station is connected to one U
pn
interface, four simultaneous
calls or connections can be made through the handsets.
■ If the DECT base station is connected to two U
pn
interfaces, eight simultaneous
calls or connections can be made through the handsets.
Please note that it is not possible to establish more simultaneous external connec-
tions than there are external B channels.
To connect a DECT base station to two U
pn
interfaces, you can combine two U
pn
ports on the MS+UPN2-8 interface card: U
pn
ports 1+2, 3+4, 5+6 or 7+8 (U
pn
port 2
is connected to U
pn
port 1, U
pn
port 4 to U
pn
port 3 etc.). Ports are combined by
setting the DIP switches on the card accordingly. In this configuration, the DECT
base station must be connected to the first U
pn
port of the pair by means of a 1:1
cable (system telephone cable).
Pin Assignment
U
pn
interface pin assignment
The following table explains the U
pn
interface pin assignment.
Pin Number Assignment
1Not used
2Not used
3U
pn
a *)
4U
pn
a
5U
pn
b
12345678