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B-9
Cisco MGX 8220 Installation and Configuration
Release 5.0, Part Number 78-6430-03 Rev. D0, November 2003
Appendix B Specifications
FRSM-4T1 Specification
FRSM-4T1 Specification
Service Interface
Loopback codes: Fractional T1 in-band loopback -
ANSI T1/E1-2/92-003 R3
DS0 loopback -
TA-TSY-000055
TA-TSY-000057
TA-TSY-0000476
Monitoring trouble codes: TA-TSY-000077
TA-TSY-0000280
ATT TR-62310
Line Interface connector: DB-15—when used with LM-DB15-4T1 line module
Line Rate: 1.544 Mbps ± 50 bps
Line Framing: ESF per ATT TR 54016
Synchronization: Transmitter can be either loop-timed to receiver or synchronized
to shelf (called normal mode)
Input Jitter Tolerance: Per ATT TR 62411
Output Jitter Generation: Per ATT TR 62411 using normal mode synchronization
Physical Layer Alarms: LOS, OOF, AIS, RAI
Number of Frame Relay Ports: 1–Single Frame Relay stream occupying n consecutive time slots
Frame Relay Interface Rates: Either 56 kbps or n* 64 kbps; n as defined previously
Frame Relay Interface: Per ANSI T1.618, 2-octet header