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Cisco MGX 8850 Multiservice Switch Installation and Configuration
Release 1.1.31, Part Number 78-11223-03 Rev. B0, May 2005
Appendix A System Specifications
MGX-AUSM/B-8T1E1 Interface Characteristics
Table A-7 E1 Interface Characteristics
Category Description
Line Interface Connector RJ48 (120 ohm) on LM-RJ48-8E1, or SMB (75 Ω) on
LM-BNC-8E1
Line Rate 2.048 Mbps ± 100 bps
Synchronization Transmitter can be: loop-timed, Receiver, or synchronized to
shelf (normal mode)
Line Code HDB3 (E1)
Line Framing 16-frame multiframe as in G.704
Input Jitter Tolerance As specified in ITU G.823 for 2.048 Mbps
Output Jitter Generation As specified in ITU G.823 for 2.048 Mbps
Physical Layer Alarms LOS, OOF, AIS, RAI
Physical Layer Statistics LCV, LES, LSES, CV, ES, SES, SEFS, AISS, UAS
Table A-8 ATM Interface Characteristics
Category Description
Standards ATM UNI v3.1, ITU-T G.804, per CCITT I.361.
Channel Configuration 1000 per card, across any of the T1 or E1 ports.
VPI/VCI Ranges VPI: 0–255.
VCI: 0–4096.
Traffic Classes CBR, VBR, rt-VBR, ABR, UBR.
UPC Parameters PCR, SCR, rt-VBR, non-rt-VBR, ABR, CCDV (CBR).
Congestion Control Support ForeSight (toward Network for ABR), ATM Forum TM 4.0
compliant mechanisms for ABR.
ForeSight Parameters MIR, PIR, Rate Up, Rate Down, QIR, QIR Timeout, IBS.