An ATA is an Analog Telephony Adapter which interconnects your standard Telephone handset to a VoIP service; without the use of a computer. Primus TBB currently uses the DLINK DVG-1120M ATA Gateway which supports the MGCP VoIP protocol. They have recently introduced two Linksys ATAs (the SPA2100 and 2102) which support the SIP VoIP protocol.
A VoIP Gateway is a seemingly simple device that allows one to connect a standard telephone to one port, a broadband modem to another port, and a computer or network sharing device to yet another port for sharing of your broadband connection.D-Link
has this to say about their product:
The DVG-1120 is a VoIP Gateway equipped with two standard phone ports, one lifeline voice port for fail-over to standard phone services, one WAN Fast Ethernet 10/100BaseTX Port, and one LAN Fast Ethernet 10/100BaseTX Port.
With the integration of both voice and data, the DVG-1120 offers Small-to-Medium-Size Businesses (SMB) the ability to route data information into one end-to-end network solution. In addition to standard residential gateway data services, end-users are enabled with low-cost long-distance calling, faxing, and a host of advanced services including DVG-1120-to-Phone, Phone-to-DVG-1120, and DVG-1120-to-DVG-1120.
The DVG-1120 is compatible with xDSL and Cable-Modem Broadband service providers with built-in support for with DHCP Client, MAC Address Cloning, PPPoE, and multiple auto-provisioning methods.
The DVG-1120 has been tested with most major VoIP Softswitch vendors' Call Management systems. Devices such as the DVG-1120 require a Call Management system to function. These services are offered independently of D-Link, but are only required if user would like to use voice features of the DVG-1120.
For Internet connection sharing in your home the DVG-1120 offers support for up to 32 IP devices. Services offered to the internal home network are DHCP Server, Network Address Translation (NAT), and IPSEC pass-thru. Because the DVG-1120 shares your single ISP IP address, it masks the local users' IP addresses from the outside world, preventing intruders and hackers from gaining access to network resources, data files or personal information.
The DVG-1120 has voice support that includes hardware based Quality of Service (QoS), voice compression (popular voice CODECs G.711-G.729e), echo cancellation, dynamic latency (jitter) buffers, silence suppression, and comfort noise generation.
The DVG-1120 features can be remotely configured using the convenient and secure Web-based Interface. For diagnostics features, the DVG-1120 has management-at-a-glance LEDs on the front panel, and over 100 real-time statistics.
Jason Kohrs of hardwareseeker.com
describes the Primus gateway like this:
VoIP, in overly simplified terms, allows one to use a standard telephone to place calls over the internet, eliminating the need for a dedicated phone line (and all of the fees/tolls charged by the phone company).
Whatis.com defines VoIP as
sending voice information in digital form in discrete packets rather than in the traditional circuit-committed protocols of the public switched telephone network, with more information available on their site, if desired.
last modified: 2007-05-28 14:56:50