Specifications

B-4 Cisco MGX 8220 Reference, Release 4.1
BNM-E3 Specification
Card General
Synchronization: Derives 8KHz 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 via LM-T3E3-D (T1/E1 clock)
BNC connector via LM-T3E3-B (E1 clock)
Alarm interface: CO compatible alarm indicator and controls DB15 connector
Indicators:
Per Card: Active (Green), Failed (Red), Standby (Yellow)
E3 Interface: Active & Okay (Green)
Active & Local Alarm (Red)
Active & Remote Alarm (Yellow)
Minor DS-3 Statistical Alarm
Shelf Voltage: A voltage OK (Green) B voltage OK (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" x 16.25"
LM-T3E3-D:7.25” x 4.5”
LM-T3E3-B:7.25” x 4.5”
Power: –48V DC, 25W