Chapter 1 - Introduction and Description

Technical Specifications

Your MTA128ST-USB terminal adapter meets the following specifications:

Trade Name

MultiModemISDN

Model Number

MTA128ST-USB (International)

Network Interface

Four-wire S/T interface

Switch Compatibility

EuroISDN (ETSI/DSS1/NET3), VN4, INS64, U.S. NI-1, AT&T 5ESS,

 

DMS-100

B-Channel Protocols

V.110*, V.120, X.75, ML-PPP

Voice Coding

PCM: A-Law (Europe); µ-Law (US)

LED Indicators

10 front panel LED indicators: Transmit Data, Receive Data, Call Status,

 

B1 Active, B2 Active, Terminal Ready, Off Hook (AUX port), 128 Kbps,

 

P1 Active (data protocol), P2 Active (data protocol)

Data Connections

Two ISDN B-channels

 

One ISDN D-channel

 

One analog port for connecting a standard telephone, modem, or fax

 

machine

Command Interface

AT commands, S-registers, result codes,

 

Windows 2000/98/95 configuration utility, and

 

Windows 2000/98/95 Dial-Up Networking (DUN)

Connectors

USB: Type B connector

 

ISDN: RJ-45 female receptacle, 4-wire S/T (accepts connection cable

 

to the network provider’s NT1 device)

 

AUX: RJ-11 female receptacle

Switches

Two-position power switch

Power Requirements

Two-prong outlet-mounted transformer (included), 240 VAC

 

50/60 Hz

Dimensions

15.0 cm × 10.7 cm × 2.8 cm (L × W × D)

Environmental

Temperature range 0°–50° C;

 

Humidity range 20–90% (noncondensing)

Power Consumption

4 watts

Weight

224 g (8 oz)

Warranty

5 years

*The MTA128ST-USB is manufactured in two builds. To determine the build of your terminal adapter (TA), issue the ATI2 command in a terminal window. If the TA responds to the command with MTA128ST-USB, then it supports V.110. If your TA resonds to the ATI2 command with MTA128ST-USB-RC, V.110 support is not available.

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