Chapter 1 Overview; Features - Cisco 7304 Installation And Configuration Manual

Features

Features
The 6E3 line card provides the following features:
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Cisco 7304 6-Port Clear Channel E3 Line Card Installation and Configuration
1-2
Single-wide line card for the Cisco 7304 router
Six independent E3 ports
Serial encapsulation protocols:
– High-Level Data Link Control (HDLC) data (default)
Point-to-point protocol (PPP)
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Frame Relay
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E3 support:
Framing control (g751)
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Clocking modes (local and line)
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– Local (diagnostic), DTE, network (line) and network (payload) loopback
Integrated data service unit (DSU) functionality
Channels are configurable to:
Provide payload scrambling for any two (Digital Link and Kentrox) supported third party DSU
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vendor modes as well as the default Cisco mode
Allow fractional E3 transmission (subrate) for any of two (Digital Link and Kentrox) supported
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third party DSU vendor modes as well as the default Cisco mode
Support for 16- and 32-bit cyclic redundancy checks (CRCs)
Support for DS3 MIB (RFC 1407)
Supports receive and transmit alarm processing:
Remote alarm indication (RAI)
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Framing errors, loss of frame (LOF)
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Loss of signal (LOS)
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Alarm indication signal (AIS)
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Performance and error counters
TX and RX data inversion
B3ZS line coding
Maintenance data link (MDL) messages
Bit error rate testing
Chapter 1 Overview
OL-5061-01