Multi-Tech Systems MTCBA-G-UF1 manual Antenna/RF Specifications, AT Command Info, Network Access

Chapter 1 – Description & Specifications

Antenna/RF Specifications

	GSM 850
Frequency RX	869 to 894 MHz
Frequency TX	824 to 849 MHz
RF Power Stand	2W at 12.5% duty cycle
Impedance	50 ohms
VSWR	<2
Typical Radiated Gain	0 dBi on azimuth plane

	GSM 1800	GSM 1900
Frequency RX	1805 to 1880 MHz	1930 to 1990 MHz
Frequency TX	1710 to 1785 MHz	1850 to 1910 MHz
RF Power Stand	1W at 12.5% duty cycle	1W at 12.5% duty cycle
Impedance	50 ohms
VSWR	<2
Typical Radiated Gain	0 dBi on azimuth plane

AT Command Info

AT commands for the GPRS wireless modem are published in a separate Reference Guide included on the product CD and posted on the Multi-Tech web site.

IP commands for GPRS modems are also published in a separate Reference Guide included on the product CD and posted on the Multi-Tech web site.

Phone Number for the Wireless Modem

•Every wireless modem will have its own unique phone number.

•The wireless modem’s phone number may simply be told to the subscriber or be on the SIM or both. Wireless provider implementations may vary.

Network Access

The network access arrangements to be specified in Windows Dial-Up Networking (of the computer that the wireless modem is serving) will vary according to the type of wireless service used.

•For GSM-without-GPRS, a circuit-switched data connection is used. The user can set up DUN to make a conventional V.32 modem connection to any terminating modem at the other end. The phone number specified in DUN can be one supplied by the wireless service provider or another phone number related to a different dialup modem service (e.g., a dialup modem service phone number from any commercial or private dialup network).

•For GSM-with-GPRS, a single DUN number is generally used by all of a wireless provider’s subscribers throughout its area of coverage (regional, nationwide, continental, etc.). Rather than being a literal phone directory number, as in conventional DUN, this is a code that gives the modem Internet access. Normally, this phone number is *99***1# .

Multi-Tech Systems, Inc. MultiModem® GPRS with USB User Guide 6