GSM/GPRS

供电

Supply voltage: 3.3V~4.4V. Typical: 3.8V

电流

Maximum: 1.6A

固件更新

Via UART port

天线类型

PCB pad with 50 Ohm impedance.

GSM Class

Small MS

频段

1. Quad-band: GSM850, EGSM900, DCS1800, PCS1900.

2. The frequency bands can be set by AT command.

3. Auto search frequency band, compliant to GSM Phase 2/2+

GPRS数据

GPRS data downlink transfer: max. 85.6kbps

GPRS data uplink transfer: max. 85.6kbps

Coding scheme: CS-1, CS-2, CS-3 and CS-4

Support   the  protocols   PAP usually used for PPP connections

Support Packet Broadcast Control Channel (PBCCH)

Support Unstructured Supplementary Service Data (USSD)

Internet service protocols TCP/UDP, FTP, PPP, HTTP, NTP, PING

传输功耗

Class 4 (2W) at GSM850 and EGSM900

Class 1 (1W) at DCS1800 and PCS1900

GPRS灵敏度

GPRS multi-slot class 12 (default)

GPRS multi-slot class 1~12 (configurable)

GPRS mobiles station class B

SMS

Text and PDU mode

SMS storage: SIM card

SIM 接口

Support SIM card: 1.8V, 3.0V

Support dual SIM card (Not support Dual SIM dual standby)

SIM工具包

Support SAT class 3, GSM 11.14 Release 99

电话簿管理

Support phonesbook types: SM, ME, ON, MC, RC, DC, LD, LA

音频

Speech codec modes: Half Rate/Full Rate/Enhanced Full Rate /Adaptive Multi-Rate

Embedded one amplifier of class AB with maximum driving power up to 870mW

Support microphones input.

Support speaker out and hand-free speaker out.

UART 接口

Support UARTF and UART debug and UART Auxiliary.

Used for AT command, GPRS data

Support autobauding from 4800bps to 115200bps

 UART Auxiliary used for communication with the GNSS Part