Specifications

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Cisco IGX 8400 Series Provisioning Guide, Release 9.3.3 and Later Releases
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Chapter 2 Cisco IGX 8400 Series Cards
Channelized Voice Module
• Software-selectable D4 or ESF frame formats
• Software-selectable line buildout for cable lengths up to 655 feet
• Automatic local loopback testing in response to specific line alarm states
• Reporting of T1 line event information (for events such as frame loss, loss of signal, bipolar
violations, and frame errors) to the CVM front card
• Support for normal clocking and loop timing
See Figure 2-20 for a description of the BC-T1 back card faceplate.
Figure 2-20 BC-T1 Faceplate
E1 Interface Back Card (BC-E1)
The BC-E1 back card provides one E1 line interface for a CVM. The BC-E1 has the following features:
• Interfaces to CEPT E1 lines (CCITT G.703 specification)
• Support for both CAS and CSS
• CRC-4 error checking
• Support for HDB3 or AMI
• 120-ohm balanced or 75-ohm balanced or unbalanced physical interfaces
BC-T1
Fail (red)
Active (green)
T1 input/output
LOS (red)
Red alarm (red)
Yellow alarm (yellow)
AIS (green)
H8316