E1/T1 PCI card installation guide
27
Card Installation & Connection
Safety Warnings
The Primary Rate E1 ISDN Interface is a TNV interface as detailed in section 6 of AS3260. In
order to meet the safety requirements of AS 3260 and TS001.
Where equipment is intended to be electrically connected to other equipment, interconnection
circuits shall be selected to provide continued conformance with the requirements of section 2.3
for SELV circuits, and with the requirements of clause 6 for TNV circuits, after making
connections between equipment's.
Make sure that the integrity of the SELV system is maintained when connection is made through
any other interface port within the system. If in any doubt seek competent advice.
All host equipment incorporating the E1 ISDN Interface
must
be earthed.
Network Cable Pinout
The 8-contact RJ45 Telephone Modular Plug on the cable between the card and the network
must be wired as follows:
1
6 5 4 3 2
(Front view)
7
8
Pin
Signal
Function
Direction
4 LTT Transmit
+ve
(tip) output
5 LTR Transmit
—ve
(ring) output
1
LRT
Rve (tip)
input
2 LRR Receive
—ve
(ring) input
If a cable is to be produced to wire into a network trunk connection, the connector on the
network end of the cable must be wired as appropriate for the network-terminating unit
provided.
If a 'cross-over' cable is to be produced to connect two E1/T1 PCI cards 'back-to-back', for
example, when one card is to run an exchange end emulation and the other card a user end
application, the cable may be wired as follows.
User End
Exchange End
4 to 1
5 to 2
1 to 4
2 to 5