Sim908 module
General features



•quad-band 850/900/18001900mhz
•gprs multi-slot class 10
•gprs mobile station class b
•compliant to gsm phase 2/2+
- class 4 (2 w @ 850/900 mhz)

- class 1 (1 w @ 1800/1900mhz)

•control via at commands (gsm 07.07 , 07.05 and simcom enhanced at commands)
•sim application toolkit
•supply voltage range:
-gprs: 3.2 ~ 4.8 v

-gps: 3.0 ~ 4.5v

•low power consumption
•dimensions: 30*30*3.2mm
•weight:
- sim908:5.2g

- sim908-c:11.1g

•operation temperature:
-40 °c to +85 °c




Specifications for sms via gsm / gprs

•point-to-point mo and mt
•sms cell broadcast
•text and pdu mode


Specifications for audio

•tricodec
- half rate (hr)

- full rate (fr)

- enhanced full rate (efr)

•hands-free operation
•echo cancellation

Specifications for data transfer

•gprs class 8/10: max. 85.6 kbps (downlink)
•pbcch support
•coding schemes cs 1, 2, 3, 4
•csd up to 14.4 kbps
•ussd
•non transparent mode
•ppp-stack
•integrated tcp/ip stack

Compatibility

•at cellular command interface

Specification for gps
•receiver type
- 42-channel

- gps l1 c/a code,

- high-performance ste engine



•sensitivity
- tracking: -160 dbm

- cold starts : -143 dbm



•time-to-first-fix
- cold starts: 30s (typ.)

- hot starts: 1s (typ.)





Dimensions: 30*30*3.2mm