Nortel 4526T-PWR 安装指导
T1 SFP specifications
37
Table 2
RJ-48C pinouts (opposite Tx and Rx connection)
RJ-48C pinouts (opposite Tx and Rx connection)
Pin
Description
1
Transmit (Tx) ring
2
Transmit tip
3
Transmit shield
4
Receive (Rx) ring
5
Receive tip
6
Receive shield
7
Not used
8
Not used
If the far end connection does not match the connections shown in this
table (
table (
then a crossover cable must be used. The crossover connections are as
shown in the following table.
shown in the following table.
Table 3
RJ-48C crossover cable connections
RJ-48C crossover cable connections
Terminal A
Terminal B
Pin
Description
Pin
Description
1
Receive ring
1
Transmit ring
2
Receive tip
2
Transmit tip
3
Receive shield
3
Transmit shield
4
Transmit ring
4
Receive ring
5
Transmit tip
5
Receive tip
6
Transmit shield
6
Receive shield
7
Not used
7
Not used
8
Not used
8
Not used
You can use a short crossover cable with a straight-through cable adapter to
connect to a straight-through cable. Do this to convert a straight-through
cable to a crossover cable.
connect to a straight-through cable. Do this to convert a straight-through
cable to a crossover cable.
T1 SFP—default settings
The Ethernet Routing Switch 4500 Series switches configure the following
T1 SFP parameters after the system powered up:
T1 SFP parameters after the system powered up:
•
Transmit Line Build Out (TLBO): set according to cable length.
Ethernet Routing Switch 4500 Series
Installation — SFPs and XFPs
NN47205-301 (324186-A)
01.04
Standard
5.1
6 December 2007
Copyright © 2007, Nortel Networks
.