Cisco Systems WRP400 Manual De Usuario

How PSTN-To-VoIP Calls Work

ATA Administration Guide

101

Calls made from Line 1 are routed through the configured Line 1 service provider, 
by default. You can override this behavior by IP dialing, through which the calls can 
be routed to any IP address entered by the user. The ATA device allows flexible 
call routing with four sets of gateway parameters and configurable dial plans. The 
following table lists VoIP outbound call routing parameters. 

Gateways 1 to 4 can be specified in a dial plan with the special identifier gw1, 
gw2, gw3, or gw4. Also, gw0 represents the internal PSTN gateway via the FXO 
port. You can specify in the dial plan to use gw

x

 (

x

 = 0,1,2,3,4) when making certain 

calls. In general, you can specify any gateway address in the dial plan. In addition, 
three parameters are added that can be used with call routing: 

•

usr: User-id used for authentication with the given gateway

•

pwd: Password used for authentication with the given gateway

•

nat: Enable or disable NAT mapping when calling the gateway

Gateway 1

Line 1

Fully qualified domain name (or IP 
address) of a gateway. If the port 
number is not specified, 5060 is 
assumed. 

Domain name or IP 
address. 

The default is blank.

GW1 Nat 

Mapping 
Enable

Line 1

Whether to enable NAT mapping 
when using Gateway 1. 

Yes or No

The default is no.

GW1 User ID

Line 1

The authentication user name when 
using Gateway 1. 

31-character string

The default is blank.

GW2 Password

Line 1

The authentication password when 
using Gateway 1.

31-character string.

The default is blank.