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Chapter 1 - Introduction and Description
MTA128ST-USB
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 Rates 300, 1.2K, 2.4K, 4.8K, 9.6K, 19.2K, 38.4K, 56K, 57.6K, 64K,
115.2K, 230.4K, and 460.8K bps
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 98/95
configuration utility, and Windows 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