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PSTN Gateway Access Using FXO Connection
PSTN Gateway Access Using FXO Connection
The following example shows how to configure Voice over IP to link users with the PSTN gateway using an FXO connection.
In this example, users connected to Router SJ in San Jose, California can reach PSTN users in Salt Lake City, Utah via Router SLC. Router SLC in Salt Lake City is connected directly to the PSTN through an FXO interface.
Figure 14 illustrates the topology of this connection example.
Figure 14 PSTN Gateway Access Using FXO Connection Example
|
| PSTN user | |
| IP cloud |
|
|
Router SJ | Router SLC |
|
|
|
| PSTN |
|
|
| cloud |
|
1(408) |
|
|
|
172.16.1.123 | 172.16.65.182 |
| S6617 |
Voice port | Voice port |
| |
San Jose 1/0/0 | 1/0/0 | Salt Lake City |
|
Note This example assumes that the company already has established a working IP connection between its two remote offices.
Configuration for Router SJ
!Configure pots dial peer 1
!Configure voip dial peer 2
session target ipv4:172.16.65.182
!Configure the serial interface interface serial 0/0
clock rate 2000000
ip address 172.16.1.123 no shutdown
Configuring Voice over IP for the Cisco 3600 Series