Nortel 5500 Series Installation Manual page 41

Pin
7
8
The T1 equipment at the far end of the T1 connection must also use
an RJ-48C jack. After the pinout of the RJ-48C jack at the far end is
determined, determine if a straight-through or crossover cable is required.
An off-the-shelf straight-through cable can be used to directly connect the
T1 SFP module and the far-end T1 equipment if the far end has the pinout
shown in the following table.
Table 13
RJ-48C pinouts (opposite Tx and Rx connection)
Pin
1
2
3
4
5
6
7
8
If the far end connection does not match the connections shown in this table
(Table 13 "RJ-48C pinouts (opposite Tx and Rx connection)" (page
then a crossover cable must be used. The crossover connections are as
shown in the following table.
Table 14
RJ-48C crossover cable connections
Pin
1
2
3
4
5
6
Copyright © 2007–2010, Nortel Networks
.
Description
Not used
Not used
Description
Transmit (Tx) ring
Transmit tip
Transmit shield
Receive (Rx) ring
Receive tip
Receive shield
Not used
Not used
Terminal A
Description
Receive ring
Receive tip
Receive shield
Transmit ring
Transmit tip
Transmit shield
Nortel Ethernet Routing Switch 5500 Series
Installation — SFPs and XFPs
NN47200-302 01.04 Standard
5.1 27 January 2010
T1 SFP specifications 41
Terminal B
Pin Description
1
Transmit ring
2 Transmit tip
3 Transmit shield
4
Receive ring
5
Receive tip
6 Receive shield
41)),