Isdn Interface Cables - Allied Telesis AR Series Hardware Reference Manual

Hardware Reference
C613-03031-01 REV C

ISDN Interface Cables

AR routers support two types of ISDN interface—Primary Rate Access and
Basic Rate Access. Figure 36 on page 71 shows how to wire a cable to connect a
Basic Rate Interface (BRI) to the ISDN network terminating equipment (NT).
Figure 36: Pin wiring diagram for an ISDN Basic Rate Interface cable.
RJ45
(to switch or router)
Not connected
1
Not connected
2
→
TX+
3
→
TX-
6
←
RX-
4
←
RX+
5
Not connected 7
Not connected 8
Notes:
→ Output from switch or router; ← Input to switch or router.
(1)
(2) Use twisted pair cable, with pairs 3 and 6, and 4 and 5.
(3) Each wire is connected to the same pins at each end.
(4) Cable version 1.0.
For Primary Rate Access there are two cabling options. Figure 37 on page 72
shows how to wire a cable to connect to the 120Ω connector of a Primary Rate
Interface (PRI). Currently there is no accepted standard for the connector at the
network termination end, so only the cable's router end is shown. Consult you
ISDN service provider for more information.
Figure 38 on page 72 shows how to wire a cable to connect to the 75Ω connector
of a Primary Rate Interface (PRI).
71
RJ45
(to NT)
Not connected
1
Not connected
2
→
RX+
3
→
RX-
6
←
TX-
4
←
TX+
5
7 Not connected
8 Not connected
BRI1NT