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DGPS
WAAS,EGNOS,MSAS
Datum
WGS-84
6.3 GSM module parameter
Frequency bands
SIM900
Quad-band: GMS 850,EGSM 900,DCS 1800,PCS 1900.
The band can be set by AT COMMAND, and default band is EGSM 900
and DCS 1800.
Compliant to GSM Phase 2/2+.
GSM class
Small MS
Transmit power
Class 4(2W) at EGSM900 and GSM850
Class 1(1W) at DCS1800 and PCS 1900
GPRS connectivity
GPRS multi-slot class 10
GPRS mobile station class B
Temperature range
Normal operation : -20~+55
℃
Restricted operation : -25~+70
℃
Data GPRS
GPRS data downlink transfer: max. 85.6 kbps
GPRS data uplink transfer: max. 42.8 kbps
Coding scheme: CS-1, CS-2, CS-3 and CS-4
SIM900 supports the protocols PAP (Password Authentication Protocol)
usually used for PPP connections.
The SIM900 integrates the TCP/IP protocol.
Support Packet Switched Broadcast Control Channel (PBCCH)
CSD transmission rates: 2.4, 4.8, 9.6, 14.4 kbps, non-transparent
Unstructured Supplementary Services Data (USSD) support
SMS
MT, MO, CB, Text and PDU mode
SMS storage: SIM card
Support transmission of SMS alternatively over CSD or GPRS. User can