Specifications

Chapter 7 – SocketModem ISDN (MT128SMI)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342C) 103
Technical Specifications
Category Description
ISDN Interface
Service: 2B+D Interface (BRI)
Interface: Four-wire S/T-type interface
Rate: 64K bps/1 B-channel; 128K bps/2-channel; 16K bps/D-channel (for
signaling) Sync or async (sync on one B-channel)
ISDN Switch Types
U.S. National ISDN-1, AT&T 5ESS Custom, Northern Telecom DMS-100 Custom,
ETSI/DSS1/NET3 (Euro ISDN), Japan NTT INS64, France VN-4
Protocols
PPP, ML-PPP, MP+, V.120, X.75, raw HDLC, CLEAR (synchronous), CHAP MD5,
PAP, & Soft Bond
Command Interface
AT command support
Dimensions
1.045” w x 2.541” h x .680” d (2.7 x 6.5 x 1.8cm)
Power Requirements
5 VDC or 3.3 VDC
Power Usage
Typical: 160 mW @ 3.3 V; 510 mW @ 5 V
Maximum: 182 mW @ 3.3 V; 543 mW @ 5 V
Operational Temperature
0° to 70°C ambient under closed conditions; humidity 20 to 90% non-condensing
Storage Temperature
-10° to +85° C
Manufacturing Information
Trade Name: SocketModem ISDN
Model Number: MT128SMI
Registration No: Contact Multi-Tech for details
Modular Jack (USOC): Contact Multi-Tech for details
Ringer Equivalence: Contact Multi-Tech for details
Approvals
Certifications:
CE Mark
EMC Approvals:
FCC Part 15 Class A
EN55022
EN55024
Safety:
UL60950
cUL60950
EN60950
IEC60950
ACA TS001 / AS 3260
Telecom:
TBR3
Intelligent Features
Calling line identification reporting (caller ID)
Async or sync support
Command Line API for Internet configuration
AT command compatible in modem mode
Complete data modem solution, including the controller and S/T interface in one
module
Flash memory to update firmware with the latest enhancements