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PART 2 – Cellular SocketModems 
Chapter 5 – SocketModem Cell and iCell – HSPA 
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342M) 
84 
 
Chapter 5 – SocketModem
® Cell and 
iCell – HSPA (MTSMC-H4) 
Introduction
 
The Multi-Tech SocketModem Cell and iCell HSDPA embedded cellular modem delivers some of the fastest cellular data 
speeds by utilizing HSPA technology. These modems allow users to connect to the Internet and send and receive data 
faster than possible with an ordinary GSM/GPRS network making it ideal for highly data-intensive applications. Based on 
industry-standard open interfaces, the SocketModem cellular modem is equipped with quad-band, high-speed RS232 
technology, which means it can be used worldwide on all existing GSM networks. In addition, it utilizes Multi-Tech's 
universal socket design. This SocketModem uses the Sierra MC8790 3G mini PCI Express module supporting HSPA 
networks. 
Product Build Options and Ordering Information 
Product
 
Description
 
Region
 
Order This Product
3
MTSMC-H4-IP 
SocketModem® iCell – HSPA  
7.2 Down / 5.76 Up – 850/900/1900/2100 
Universal IP – Serial 
AT&T  / Bell / Telus / Euro 
Global  
MTSMC-H4-GP 
SocketModem® iCell – HSPA  
7.2 Down / 5.76 Up – 850/900/1900/2100 
GPS / Universal IP – Serial 
AT&T / Bell / Telus / Euro 
Global  
MTSMC-H4-MI-IP 
SocketModem® iCell – HSPA  
7.2 Down / 5.76 Up – 850/900/1900/2100 
Universal IP – USB  
AT&T / Bell / Telus / Euro 
Global  
MTSMC-H4-MI-GP  SocketModem® iCell – HSPA  
7.2 Down / 5.76 Up – 850/900/1900/2100 
GPS / Universal IP – USB+Serial+GPIO 
AT&T / Bell / Telus / Euro 
Global  
MTSMC-H4-U 
SocketModem® Cell – HSPA 
7.2 Down / 5.76 Up – 850/900/1900/2100 
Native USB direct from the module 
AT&T / Bell / Telus / Euro 
 
 
MTSMI-UDK 
Universal Developer Kit 
Global  
How to Read the Product Codes in the Table Above: 
H4 
HSPA (High-Speed Uplink and Downlink Packet Access) 
IP 
Universal IP™ Stack 
GP 
Dedicated GPS Receiver 
MI Multiple 
Interface 
U USB 
UDK 
Universal Developer Kit 
Other Product Codes: 
The complete product code may end in .Rx. For example, MTSMC-H4-IP.Rx.   
“R” indicates product revision. “x” is the revision number. 
AT Commands Reference Guide 
For Product 
Reference Guides Title and Document Product 
Number 
Fax 
Commands 
Voice 
Commands 
SocketModem
 
Cell HSPA 
(MTSMC-H4) 
SocketModem Cell and iCell HSPA AT Commands 
Reference Guide (S000483x) 
NA NA 
SocketModem iCell HSPA 
(MTSMC-H4-IP and GP 
SocketModem Cell and iCell HSPA AT Commands 
Reference Guide (S000483x) and 
Universal IP Commands (S000457x) 
NA 
 
NA 
NA 
 
NA 
 
 
Preliminary  
Confidential