Aastra 470 System Manual page 125

PRI primary rate interface, network-side
Mains power
Exchange
Fig. 39 PRI primary rate interface on NT1
Tab. 48 Connection of PRI primary rate interface
NT1
Socket Pin
1
2
3
4
5
6
7
8
1)
Other designations are also possible on the NT1 such as: "S2m ab" instead of "TxA/TxB" and "S2m an" instead
of "RxA/RxB".
Aastra 470 ab R3.0
syd-0337/1.5 – R3.0 – 05.2013
NT1
U PRI
Cable cores
Straight patch cable
PRI sig-
1)
nal
TxA
TxB
–
RxA
RxB
–
–
–
RXA
RXB
Communication
TXA
server
TXB
Communication server
PRI signal
RxA
RxB
–
TxA
TxB
–
–
–
Installation
Pin Socket
1
2
3
4
5
6
7
8
125