Smart Machine Smart Decision
SIM808_Hardware Design_V1.00 2014.03.27
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can search the 4 frequency bands automatically. The frequency bands also
can be set by AT command “AT+CBAND”. For details, please refer to
document [1].
z Compliant to GSM Phase 2/2+
Transmitting power
z Class 4 (2W) at GSM 850 and EGSM 900
z Class 1 (1W) at DCS 1800 and PCS 1900
GPRS connectivity
z GPRS multi-slot class 12（default）
z GPRS multi-slot class 1~12 (optional)
Temperature range
z Normal operation: -40℃ ~ +85℃
z Storage temperature -45℃~ +90℃
Data GPRS
z GPRS data downlink transfer: max. 85.6 kbps
z GPRS data uplink transfer: max. 85.6 kbps
z Coding scheme: CS-1, CS-2, CS-3 and CS-4
z PAP protocol for PPP connect
z Integrate the TCP/IP protocol.
z Support Packet Broadcast Control Channel (PBCCH)
z CSD transmission rates：2.4，4.8，9.6，14.4 kbps
CSD
z Support CSD transmission
USSD
z Unstructured Supplementary Services Data (USSD) support
SMS
z MT, MO, CB, Text and PDU mode
z SMS storage: SIM card
SIM interface Support SIM card: 1.8V, 3V
External antenna Antenna pad
Audio features
Speech codec modes:
z Half Rate (ETS 06.20)
z Full Rate (ETS 06.10)
z Enhanced Full Rate (ETS 06.50 / 06.60 / 06.80)
z Adaptive multi rate (AMR)
z Echo Cancellation
z Noise Suppression
Serial port and
USB interface
Serial port:
z Full modem interface with status and control lines, unbalanced,
asynchronous.
z 1200bps to 115200bps.
z Can be used for AT commands or data stream.
z Support RTS/CTS hardware handshake and software ON/OFF flow control.
z Multiplex ability according to GSM 07.10 Multiplexer Protocol.
z Autobauding supports baud rate from 1200 bps to 115200bps.
USB interface:
z Can be used as debugging and firmware upgrading.
Phonebook management Support phonebook types: SM, FD, LD, RC, ON, MC.
SIM application toolkit GSM 11.14 Release 99
Real time clock Support RTC
Alarm function Can be set by AT command
Physical characteristics
Size: 24*24*2.6mm
Weight: 3.5g
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