Installation guide

5-2
Cisco 10000 Series Routers Line Card Hardware Installation Guide
OL-6773-04
Chapter 5 24-Port Channelized E1/T1 Line Card Overview
Line Card Summary
E1 Features
The E1 features of this line card support:
• European 2.048 MbpsTU G.703 and G.704 serial interfaces
• Local or network loopback for any E1 port. Network loopback supports:
– Line
– Payload
• CRC4 (cyclic redundancy check) and non-CRC4 framing modes
• Detection of LoS (loss of signal) and LoF (loss of frame)
• Protocol encapsulations:
– High-Level Data Link Control (HDLC)
– Frame relay
– Point-to-Point Protocol (PPP)
• Channel bandwidths of N x 64 kbps in framed E1 mode, where N has a value from 1 to 31, and a
single channel bandwidth of 2048 kbps (N = 32) in unframed E1 mode
• Per-port selection of internal or external (line) clock source
• Solutions for service providers where fiber interfaces are unavailable
• Internet service provider interface connections to existing copper Internet Protocol (IP) E1 lines
• Programmable National Reserved bits
• High density bipolar 3 (HDB3) line encoding
• E1-level bit error rate test (BERT) functions
T1 Features
The T1 features of this line card support:
• Alternate Mark Inversion (AMI) or Bipolar with 8-Zeros Substitution (B8ZS) line encoding
• Up to 24 separate interfaces per T1 port
• FDL support:
– Full ANSI T1.403 mode
– ATT 54016 receive-only
– SMARTJACK remote loopback
• Loopback for each T1 port
– Line and payload (types of network loopback)
– Local
– Remote
• Per-port selection of internal or external (line) clock source
• Detection of LoS and LoF
• Short-haul line buildout up to 655 feet