B-4
Cisco MGX 8220 Installation and Configuration
Release 5.0, Part Number 78-6430-03 Rev. D0, November 2003
Appendix B Specifications
BNM-E3 Specification
Card General
Synchronization: Derives 8-kHz shelf synchronization clock from a variety of
sources:
• E3 physical interface
• 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: DB15 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 controls DB-15 connector
Indicators:
• Per Card: Active (green), failed (red), standby (yellow)
• E3 Interface: Active and okay (green)
Active and local alarm (red)
Active and remote alarm (yellow)
Minor DS-3 statistical alarm
• Shelf Voltage: Voltage okay (green) B voltage okay (green)
• Alarms: Major (red), minor (yellow) ACO (yellow), history (green)
Maintenance/Serviceability
Features:
Internal isolation loopbacks
External remote loopback
Hot-pluggable
• 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
