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38 SFP specifications
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The following table outlines the T1 SFP parameters with default settings:
Table 4
T1 SFP—default parameters
T1 SFP parameter
T1 TLBO
T1 Framed or unframed
T1 Line code
T1 Tx clock source
T1 Framing
T1 Rx sensitivity
T1 Yellow alarm
T1 Fault propagation
T1 Tx disabled behavior
T1 Transmit AIS
The T1 SFP module must be configured to match the parameters of the T1
equipment at the far end. If you must change the parameters, contact Nortel
Technical Support.
1000BASE-SX (LC) SFP specifications
The 1000BASE-SX SFP provides 1000BASE-SX Gigabit Ethernet
connectivity at 850 nm using multimode optical fiber. This SFP supports
full-duplex operation only. The part number for this model is AA1419013-E5.
The following table describes standards, connectors, cabling, and distance
for the 1000BASE-SX SFP.
Copyright © 2007, Nortel Networks
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Framed or Unframed: Insert framing word into the frame (1 bit per T1
frame) or do not insert framing word into the frame.
Line code: Binary 8 Zero Substitution (B8ZS) or Alternate Mark
Inversion (AMI).
Clock: Use Rx clock or internal clock for Tx clock (Nortel recommends
internal clock for Tx clock).
Framing: D4 or Extended Super Frame (ESF), depends on the framing
word required by the T1 equipment at the far end.
Ethernet Routing Switch 4500 Series
Installation — SFPs and XFPs
NN47205-301 (324186-A) 01.04 Standard
5.1 6 December 2007
Default setting
0 (0 ft–133 ft)
1 (framed)
0 (B8ZS)
1 (Tx clock)
1 (ESF)
1 (limited long haul)
0 (normal operation)
0 (normal operation)
2 (Alarm Indications Signal—AIS)
0 (normal operation)
ATTENTION
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