General features
  Tri-Band GSM/GPRS 900/1800/1900 MHz or 
    Quad-Band GSM/GPRS 850/900/1800/1900 MHz
  GPRS multi-slot class 10/8
  GPRS mobile station class B
  Compliant to GSM phase 2/2+
     Class 4 (2W @ 850/900MHz) 
     Class 1 (1W @ 1800/1900MHz)
  Dimension: 40mm x 33mm x 2.9mm
  Weight: 8 g
  Control via AT commands (GSM 07.07, 07.05 and SIMCom enhanced AT Commands)
  SIM application toolkit
  Supply voltage range 3.4V...4.5V
  Low power consumption
  Normal operation temperature: -20 to +60
  Restricted operation temperature: -30 °C to -20 °C and +60 °C to +80 °C
  Storage temperature: -40°C to +85°C

Specifications for fax
  Group 3, class 1

Specifications for data:
  PBCCH support
  GPRS class 10: max. 85.6 Kbps (downlink)
  PPP-stack
  Coding schemes CS 1, 2, 3, 4
  CSD up to 14.4 kbps
  USSD
  Non transparent mode

Specifications for SMS via GSM
  Point-to-point MO and MT
  SMS cell broadcast
  Text and PDU mode

Specifications for voice
  Tricodec
Half rate (HR)
Full rate (FR)
Enhanced Full rate (EFR)
  Hands-free operation (Echo suppression)

Interfaces
  Interface to external SIM 3V/1.8V
  Two analog audio interfaces
  RTC backup
  Serial interface and debug interface
  LCD interface
  Keypad interface
  Antenna connector and antenna pad