1-3
Cisco VG248 Analog Phone Gateway Hardware Installation Guide
78-13154-01
Chapter 1 Overview
Front Panel
Front Panel
Figure 1-2
provides an overview of the interfaces and LED displays on the front
panel of the VG248.
Figure 1-2
VG248 Front Panel
FXS Telco Connectors
The FXS interface consists of two telco (RJ-21) connectors featuring these
characteristics:
•
On-premise connections only—analog phones must be physically located in
the same building as the VG248.
•
Maximum supported line length—5000 feet or 415 Ohms
.
•
Loop start support
•
Support for disconnect supervision
•
DTMF dialing
•
Maximum ringer equivalency number (REN) load—3 per line, and only two
phones per line can be off-hook at any one time
1
FXS telco connectors, ports 1-24 and 25-48
5
System status indicators
2
Port status indicators, ports 1-24 and 25-48
6
Ethernet port
3
Async 1 and 2 ports, unused
7
Ethernet status indicators
4
Console port
1
2
1
2
3
4
5
6
7
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