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B-2
Cisco MGX 8220 Installation and Configuration
Release 5.0, Part Number 78-6430-03 Rev. D0, November 2003
Appendix B Specifications
BNM-T3 Specification
Card General
ATM layer counters: Number of cells received good
Number of cells received and discarded due to bad HEC
Number of cells transmitted good
Number of cells received from cell bus
Number of cells transmitted to cell bus
Diagnostics: Header of first cell received with invalid egress translation
entries
Number of cells dropped due to invalid egress translation
entries
Synchronization: Derives 8-kHz shelf synchronization clock from a variety of
sources:
• Internal 8-kHz clock (10 ppm)
• BNM-T3 PLCP
• External T1/E1 clock port with a clock rate of
1.544 Mbps ± 50 bps (T1) or 2.048 Mbps ± 100 bps (E1)
External Office clock
interface:
DB-15 connector using LM-T3/E3-D (T1/E1 clock)
BNC connector using LM-T3/E3-B (E1 clock)
Alarm interface: CO compatible alarm indicator and control
DB-15 connector
Indicators: Per card: active (green), failed (red), standby (yellow)
T3 Interface: active and okay (green)
Active and local alarm (red)
Active and remote alarm (yellow)
Minor DS-3 statistical alarm
Maintenance/Serviceability
Features:
Internal isolation loopbacks
External remote loopback
Hot-pluggable
• Reliability: > 65000 hours MTBF
• Card Size: BNM-T3: 7.25 in. x 16.25 in.
LM-T3E3-D: 7.25 in. x 4.5 in.
LM-T3E3-B: 7.25 in. x 4.5 in.
• Power: –48V DC, 25W