
Cisco IOSSoftware Configurationforthe Cisco12000Series One-PortChannelized OC-12/STM-4(DS1/E1)ISE Line
Layer 1 Software Feature Descriptions
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Cisco IOS Release 12.0(27)S1
Layer 1 Software Feature Descriptions
The following subsections sections identify the major software supported features provided by the
1-Port CHOC-12 ISE line card.
• SONET and SDH, page 3
• DS1 Features, page 4
• E1 Features, page 4
• Automatic Protection Switching, page 4
• Online Insertion and Removal, page 4
• DS1 Features, page 4
SONET and SDH
The following options are configured and monitored at the port level:
• SONET or SDH framing
• Internal and line clocking mode
• Local (diagnostic) and network (line) loopbacks
• Performance and error processing
• Receive and transmit alarms, performance and error processing
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LOS, LOF, LAIS, PAIS, LOP, LRDI, PRDI, SF, SD, LREI (Line FEBE), PREI (Path FEBE)
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Error counts for B1, B2, and B3
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Threshold Crossing Alerts (TCA) for B1, B2, B3 with configurable threshold
• North American SONET Virtual Tributary 1.5 (VT 1.5) mapping:
STS-1 to VTG to VT1.5 to DS1
• Plesiochronous Digital Hierarchy DS3 (PDH DS3) with M13 and C-bit mapping:
STS-1 to DS3 to DS1
• European SDH Virtual Container 12 (VC-12) mapping:
AU-4 to TUG-3 to TUG-2 to VC-12 to E1
• Japanese SDH VC-11 mapping:
AU-3 to TUG-2 to VC-11 to DS1
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