Prosody X PCI Express R1 Card – Installation Guide
1.6.2 External connector pinouts
NOTE
The modular sockets provided for Ethernet and E1/T1 connections to network
equipment are commonly referred to as “RJ45” types. This terminology is used in
this document and refers to a non-keyed 8 position, 8 circuit (8P8C) modular
socket. For T1, the connectors are compatible with RJ48C jacks.
The front plate of the PCI Express card has up to 5 RJ45 sockets. The first socket
(bottom) is a dual Ethernet interface. The remaining four sockets, numbering bottom
to top, are E1/T1 telephony network trunk connections. The E1/T1 pin outs are as
detailed below:
RJ45 plug
Circuit
RJ45 pin
1
RX A tip
1
2
RX A ring
2
3
4
TX A tip
4
5
TX A ring
5
6
7
8
Shield ------------- Shield
CAUTION
When making a network connection, to reduce the risk of fire, only
telecommunications line cord of 26 AWG or larger may be used.
1.6.3 RJ45 crossover connection for E1/T1 interface
A 'cross-over' cable is required to connect two E1 or T1 interfaces 'back-to-back', for
example, when one interface is to run as an exchange end emulation and the other
interface a user end application. The cable should be wired as follows.
User End
Exchange End
4 to
1
5 to
2
1 to
4
2 to
5
1.6.4 75 ohm trunk connection
NOTE
Different E1 impedance can be supported on the same card;
The card can simultaneously support both E1 and T1 ports.
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