Cisco VG420 Voice Gateway Software Configuration Guide
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- Updated:
- August 31, 2022
Chapter: Configuring the Voice Ports
Configuring the Voice Ports
Voice Ports in Cisco VG420 Voice Gateway
The Cisco VG420 Voice Gateway supports the following SKUs:
-
VG420-144FXS: This has144 analog FXS ports and no FXO port
-
VG420-132FXS/6FXO: This has 132 analog FXS ports and 6 FXO ports
-
VG420-84FXS/6FXO: This has 84 analog FXS ports and 6 FXO ports
Signaling Types for the Analog Ports
-
FXS Ports: This voice port supports loop start, ground start, and DID signaling types.
-
FXO Ports: This voice port supports loop start and ground start signaling types.
SKU Information
See the following table for information on the voice ports that are supported on these SKUs
|
SKUs |
VG420-144FXS |
VG420-132FXS/6FXO |
VG420-84FXS/6FXO |
|---|---|---|---|
|
FXS Ports |
144 |
132 |
84 |
|
FXO Ports |
0 |
6 |
6 |
|
Number of Failed Over Ports |
N/A |
6 |
6 |
|
DID and long loop ports |
108, 1/0/0 to 1/0/107 |
108, 1/0/0/ to 1/0/107 |
84, 1/0/0 to 1/0/83 |
|
Maximum REN |
80 |
80 |
80 |
|
RJ21 Connectors |
6 |
6 |
4 |
Fail Over Port Mapping
To view the fail over port mapping for Cisco VG420 Voice Gateway, see the following sample output of the show voice port summary:
VG420-132FXS/6FXO: provide 6 power fail-over ports:
PWR FAILOVER PORT PSTN FAILOVER PORT
================== ==================
1/0/126 FXO BYPASS 1/0/132
1/0/127 FXO BYPASS 1/0/133
1/0/128 FXO BYPASS 1/0/134
1/0/129 FXO BYPASS 1/0/135
1/0/130 FXO BYPASS 1/0/136
1/0/131 FXO BYPASS 1/0/137
VG420-84FXS/6FXO: provide 6 power fail-over ports:
PWR FAILOVER PORT PSTN FAILOVER PORT
================== ==================
1/0/78 FXO BYPASS 1/0/84
1/0/79 FXO BYPASS 1/0/85
1/0/80 FXO BYPASS 0/1/86
1/0/81 FXO BYPASS 1/0/87
1/0/82 FXO BYPASS 0/1/88
1/0/83 FXO BYPASS 1/0/89
Configuring the Voice Ports
Cisco VG420 Voice Gateway supports ds0-group and E&M voice ports on existing voice NIMs (NIM slot 0). To know how to configure these digital ds0-group port, E&M, FXS and FXO voice ports, see the Voice Port Configuration Guide.
To view detailed information about voice port configuration, see the Cisco IOS Voice Configuration Library.
 Note |
It is recommended that you configure the interdigit timeout value for the voice ports. To configure this value for a specified voice port, use the timeouts interdigit <seconds> command in the voice-port configuration mode. If you do not configure this value, by default, the value is 10 seconds. To learn more about this command, see the Cisco IOS Voice Command Reference Guide. |
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