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) 555-4000

 

 

 

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 dial-peer voice 1 pots

destination-pattern +14085554000 port 1/0/0

!Configure voip dial peer 2

dial-peer voice 2 voip destination-pattern 9...........

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 VC-45

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Cisco Systems 3600 manual Pstn Gateway Access Using FXO Connection Example

3600 specifications

Cisco Systems 3600 is a high-performance modular router series designed for small to medium-sized enterprises and branch offices. Launched in the late 1990s, it has been widely recognized for its flexibility, scalability, and reliability. The series is part of Cisco's extensive networking portfolio and has played a vital role in delivering various services and applications while enhancing operational efficiency.

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