Cisco Systems WRP400 Manual De Usuario

6

ATA Administration Guide

94

This chapter describes how to configure the PSTN gateway on the SPA3102. 

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The SPA3102 has the following ports for connection to telephony devices:

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FXS port (Phone)—Connect to a standard analog telephone or fax machine, 
configured by using the Line page.

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FXO port (Line)—Connect to a standard telephone wall jack for connectivity to 
the PSTN, configured using the PSTN Line page.

Line 1 does not provide a gateway because it provides only VoIP service. The 
VoIP-To-PSTN calling function is referred to as a 

PSTN gateway

, and the PSTN-To-

VoIP calling function is referred to as a 

VoIP gateway

. 

Note the following definitions:

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VoIP caller—One who calls the ATA device via VoIP to obtain PSTN service