BenQ长期耕耘于资讯产业，拥有广博的科技、丰富的生产经验和开阔的眼界,并专注于通讯、多媒体及电脑外设应用领域.目前其推出的无线通信模块借助于其雄厚的开发实力和丰富的生产经验，已经迅速地得到了国内车载电话、无线公话、智能抄表、GPRS 系统商等客户的认同。

Model M23 A

Product Feature Tri-Band GSM/GPRS module : EGSM900/DCS1800/PCS1900

Compliant with GSM Phase 2+ standard

Control via AT commands

Supply Voltage range from 3.3v to 4.2v

Voice HR/FR/EFR

Noise deduction, echo cancellation

Telephony

Emergency Call

Dual Tone Multi Frequency Function (DTMF)

Short Message Service (SMS) Delivery Report

Point to point MT/MO

Cell Broadcast

GSM Circuit Switched Data Asynchronous

Transparent/ non-transparent

Up to 14.4kbps

GPRS Packet Data GPRS Class B

GPRS Multi-slot Class 4

4 slot downlink (86.6kbps), 2 slot uplink (42.8kbps) max 5 slot

Coding Schemes : CS1 to CS4

Supplementary Services Number identification

Call forwarding (Call Divert)

Call completion

Multi Party

Charging

Call barring

Interface Antenna Interfaces :

RF connector support coaxial cable

RF pads support RF cable soldering

44-pin B2B connector including :

UART/RS232

SIM (1.8V/3V)

General Purpose I/Os

Analog audio input/output

Power supply connection

AT command set according to GSM 27.05, 27.07

General Information Dimension : 55.5 x 40 x 5.95 mm

Weight : 15 g

Operating Temperature : - 20 ~ + 60 °C

Functional Temperature :- 20 ~ + 70 °C

Storage Temperature : - 40 ~ +85 °C

1. M23模块详细资料下载：

BENQ_M23A.rar