Feature

Implementation

Power supply

Single supply voltage 3.4V – 4.2V, typical: 3.8V

Power saving

Typical power consumption in Sleep mode to3-4mAdepends on network condition

Frequency bands

MD251Dual band: EGSM 900/ DCS 1800 or GSM850/PCS 1900.

Transmit power

Class 4 (2W) at EGSM900

Class 1 (1W) at DCS1800 and PCS 1900

GPRS connectivity

GPRS multi-slot class 10

GPRS mobile station class B

Temperature range

Normal operation:-40°Cto +85°C

SMS

MT, MO, CB, Text and PDU mode

SMS storage: SIM card

Support transmission of SMS alternatively over CSD or GPRS. User can choose preferred mode.

FAX

Group 3 Class 1

SIM interface

Supported SIM card: 1.8V/3V

External antenna

Connected via antenna pad

Phonebook management

Supported phonebook types: SM, FD, LD, RC, ON, MC.

SIM Application Toolkit

Supports SAT class 3, GSM 11.14 Release 97

Real time clock

Implemented

Timer function

Programmable via AT command

Physical characteristics

Size:24*24*2.9

Weight:6g

Firmware upgrade

Firmware upgradeable over serial interface