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B-3
Cisco VG30D Voice Gateway User Guide
OL-19276-01
Appendix B References and Technical Specifications
Technical Specifications
Real Time Clock/NVRAM Devices
This device is powered by a Lithium battery:
Power
Primary Rate Interfaces
Clocking
Predicted Operational Life
> 20 years
Predicted Storage Life
1 year at 70°C, or 4.8 years at 30°C, worst case
Clock Accuracy
± 1.6 minutes per month at 25°C
Operating Input Voltage Range
100 Vac to 230 Vac
AC Frequency
60/50 Hz through IEC connector
Power Consumption
Maximum 10 Watts
Power Supply
Integral Universal Input Power Supply Unit
Primary Rate Interfaces
2
Connectors
RJ 45 (120 ohm) or BNC (75 ohm)
Line Interface
CCITT G.703/G.704/G.732, 2.048Mbit/s,
120-ohm balanced or 75-ohm unbalanced
Line Encoding
HDB3, clear channel capability
Frame Structure
CCITT G.704 at 2.048Mbit/s;
CRC-4 multiframe mode
Sub-equipped channel configurations
Fully configurable in DPNSS
Frame loss & alignment
CCITT G.706 at 2.048Mbit/s
Signalling Channel
TS 16 Common channel signalling timeslot 16
Signalling Protocols
Q.931 Euro-ISDN (ETS 300 403)
QSIG: ISO, ETSI, ECMA
DPNSS: BTNR 188 issue 7
Signalling Orientation
All protocols fully ET/PBX configurable
Clock Source
The unit can be synchronised to either primary
port.
Internal Clock Stability
E1 - 2.048Mbit/s ± 100 ppm
Summary of Contents for VG30D
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Page 14: ...1 4 Cisco VG30D Voice Gateway User Guide OL 19276 01 Chapter 1 Introduction Management ...
Page 58: ...7 2 Cisco VG30D Voice Gateway User Guide OL 19276 01 Chapter 7 SCN Clock Synchronisation ...
Page 62: ...8 4 Cisco VG30D Voice Gateway User Guide OL 19276 01 Chapter 8 SNMP Traps Layer 1 Alarm Traps ...
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