Matrix SETU ATA211 System Manual
5
CHAPTER 2
Knowing SETU ATA211
The Overview
ATA211 is a VoIP-FXS-FXO Adapter. It allows you to make and receive voice calls over IP Network as well as
PSTN network using a conventional telephone instrument.
ATA211 uses SIP (Session Initiation Protocol) protocol to make voice calls over the IP network. It converts the
voice traffic into IP packets for transmission over the internet. When a telephone number is dialed by you, ATA211
converts it into an IP call using the Session Initiation Protocol (SIP) and initiates a call, thereby making VoIP calls
as easy as normal telephone calls. You also have the flexibility to make a call by selecting any SIP Trunk or the
FXO port.
Using ATA211, you can make VoIP calls and browse the Internet simultaneously.
SETU ATA211 can be used in residences, small and home offices, offices of medium and large enterprises.
SETU ATA211 supports 3 SIP trunks, allowing you to subscribe with three different Internet Telephony Service
Providers or to use the SIP trunks for Peer-to-Peer Calls.
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