Specifications

Chapter 7 – SocketModem ISDN (MT128SMI)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342F) 110
Technical Specifications
The SocketModem ISDN (MT128SMI) meets the following specifications:
Category Description
Data/Protocol Standards
PPP, ML-PPP, MP+, V.120, X.75, raw HDLC, CLEAR (synchronous), CHAP MD5,
PAP, & Soft Bond, X.31-D (async, X.31 Case B X.25 over D-channel),
X.31-B (async, X.31 Case A X.25 over B-channel)
Data Format
Serial, asynchronous, synchronous
Character Format
7 or 8 data bits; 1 or 2 stop bits; odd, even, none, mark, or space parity; 10-bit only
ISDN Speeds
64K bps/1 B-channel; 128K bps/2-channel; 16K bps/D-channel (for signaling)
Serial/Data Speeds
Serial port data rates adjustable to 300, 1200, 2400, 4800, 9600, 19200, 38400,
57600, 115200, and 230400 bps
Data Error Correction
Supported in V.120 and X.75 data protocols
Modes of Operation
Full duplex over dial-up lines; data mode, command mode, online command mode
Dimensions
2.541” L × 1.045” W × 0.68” H (6.45 x 2.65 x 1.7 cm)
Weight
0.6 oz. (17 g)
Operating Temperature
0° to 70°C
Storage Temperature
-40° to +85° C
Humidity
20% to 90% (non-condensing)
Operating Voltage
5VDC or 3.3VDC
Power Requirements
Typical: 160mW @ 3.3V; 510mW @ 5V
Maximum: 182mW @ 3.3V; 543 mW @ 5V
Flow Control
XON/XOFF (software), RTS/CTS (hardware)
Command Buffer
200 characters
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
ISDN Service
2B+D
ISDN Interface
Four-wire S/T Basic Rate Interface (BRI)
Certifications &
Approvals
Certification:
CE Mark
Safety Certifications:
UL 60950
cUL 60950
EN 60950
AS/NZS 6950:2000
EMC Approvals:
FCC Part 15 Class A
EN 55022
EN 55024
Telecom:
TBR3
Warranty
2 years
Intelligent Features
Calling line identification reporting (caller ID)
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