@Box AT-221D
Dialup Internet Access + Fax T.38 Support model No. Dial-up Modem Ethernet NAT (Broadband) PSTN AT- 221 D l   l

Overview

@Phone AT-221D allows users to route voice and fax calls over a Dial Up IP network to lower telephone toll charges. AT-221D is a one port gateway offering a cost-effective and simple way to immediately utilize VoIP--the users just connect an analog telephone to the AT-221D and follow basic set up procedures to enable their office for VoIP. AT-221D is a one port model convenient for connecting a telephone on the VoIP system for using dial up connection.

Standard-based

@Phone AT-221D supports the ITU-T H.323 standards. AT-221D will interwork with any vendor products complying with the H.323 specifications. AT-221D is compatible with any standards-based PBXs, key systems (KTS), and analog telephones. AT-221D can be connected to a PBX or KTS CO port and a standard RJ-11 port on an analog phone. For IP networking, the existing PSTN can be used with the AT-221D system to connect to dial-up ISP. @Phone can be remotely managed via a remote modem over PSTN line.

PSTN Back Up
Against power failure or IP network problems, AT-221D has a PSTN backup function that automatically enables the user to make calls via the regular telephone network. Thus, at no point will AT-221D users be without critical phone services.

Features

§           1 analog port for Dial Up and PSTN Back Up

§           1 FXS port

§           Supports direct connection to the PSTN

§           Choice of codecs, including G.723, G.711 and G.729 voice coding

§           T.38 Fax

§           Call connection without a gatekeeper

§           Interoperates with other H.323 standards-based VoIP equipment.

§           Easy to use, simple to activate

§           VAD (Voice Activity Detection)

§           Silence suppression

§           Comfort noise generation (CNG)

§           Comfort noise level control

§           Supports Caller ID in VoIP mode

§           Echo cancellation (G.168)

§           Inband and outband DTMF signaling

§           Excellent voice quality DSP technology

§           Remote management via Telnet

§           Software updates/upgrades via remote access

§           Interoperable with standards-based gatekeepers and gateways

§           OEM customization available

§           TFTP support

§           LCD display for easy setup

§           LED indicators for troubleshooting and diagnostics

§           One-year warranty

[Dial-up]

§           Data Rates from 300 bps to 56k bps (If needed in use, the rate can be limited by software)

§           Data Modulation Standards V.90, V.34, V.432bis, V.22bis, V.22, V.23, V.21 and V.23 reversible (Minitel), Bell 212, Bell 103 Dial-Up Modem V.42 Error Control

§           V.42 Error Control

§           V.42bis Compression

§           Protected against surge and over voltage on the telephone line

Software Specification

Standards
ITU H.323 v3, H.225, H.245
RTP/RTCP, RAS, Q.931
TFTP (Trivial File Transfer Protocol)
Telnet protocol
ITU G.711, ITU G.723.1, ITU G.729.A
ITU G.168(25ms) Echo cancellation
IEEE 802.3
T.38 Fax

Management
RS-232C, Telnet, Modem, HTTPD

Hardware Specification

User Port
1 FXS Port: KTS, analog telephone, PBX CO line, or G3 fax; loop start; RJ-11 connector
1 PSTN port, RJ-11 connector

Management Port
RS-232C, 19,200 bps asynchronous; RJ-11 connector

Power
100~240VAC, 50~60Hz, 5V, 1A

Dimensions
4.7” W x 1.18” H x 6.5” D (12cm W × 3cm H × 16.5cm D)

Weight
1.1 lbs (.5 kg)

Operating Temperature
32℉ to 104℉ (0℃ to 40℃)

Operating Humidity
10% to 95% noncondensing

Storage Temperature
14℉ to 140℉ (0℃ to 60℃)

Storage Humidity
5% to 90% noncondensing