Cisco Systems MGX 8230 Physical Layer Features

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Cisco MGX 8230 Edge Concentrator Installation and Configuration
Release 1.1.31, Part Number 78-11215-03 Rev. B0, May 2001
Chapter2 Module and Service Descriptions
ATM UNI Service Module (AUSM)
Physical Layer Features
All Cards
•Transmitter is loop-timed to r e c eiver or s y n ch ro n ize d to shelf
•Loop-up, loop-down patte rn gen er atio n and verific ati on
•Transmission convergence sublayer functions per ITU G.804
•LCV, LES, LSES, CV, ES, SES, SEFS, AISS, UAS performance statistics
•Bit rate error test (BERT) and ext en de d loopback pattern gener ati on /ve rification (with optional
SRM)
•1:N redundancy within a group of n + 1 AU SM/B c ards of same typ e on a she lf (with opt i onal SRM)
•LOS, OOF, AIS, RAI alarms
T1 Cards
•Eight T1 (1.544 Mbps +/–50 bps) lines per card
•B8ZS or AMI line coding
•ANSI T1.408 extended Super Frame format line framing
•ANSI T1.408 support for detection and display of received T1 ESF loopback codes on extended
Super Frame (ESF) data link
•Cell transfer capacity 3623 c ell s/se c per T1
E1 Cards
•Eight E1 (2.048 Mbps +/–50 bps) lines per card
•HDB3 or AMI line coding
•ITU G.704 16-frame multiframe line framing and clear channel for E1
•BERT and extended loopback pattern generation/verification (with optional SRM)
•Cell transfer capacity 4528 cells/sec per E1 (G.704), 4830 cells/sec per E1 (clear channel)