OPEN 812L VoIP ATA Router
User Guide
Page iii
OPEN Networks Pty Ltd
www.opennw.com
1. Getting
Started
1.1 Introduction
Congratulations on your purchase of the of the OPEN812L VoIP ATA router. The VoIP
Analogue Telephone Adapter (ATA) product is a standard-based communication device that
delivers true, next-generation voice-over-IP (VoIP) terminations to residential homes worldwide.
VoIP is a form of Internet telephony that allows users to make telephone calls through the
Internet. Voice data is sent through a packet-switched network instead of the circuit-switch
transmission. The VoIP system send signals to set up or terminate calls and then make it
possible for people to talk and hear each other online. Internet Telephony employs a variety of
protocols, including RTP for transport of multimedia data and SIP for call signalling and control.
The VoIP ATA connects to your broadband router and your telephone, acting as a go-between
and performing the signal translation that allows your analogue telephone to communicate
through your broadband connection. The VoIP ATA is a mixed-environment adaptor that
interface legacy analogue telephones, fax machines, analogue telephones and other analogue
devices to IP-based technology networks, thereby allowing users and VSPs to protect prior
investments in their analogue telephones, fax machine and speaker phones, and migrate to IP
at their own pace.
