The CMS91 module is a dual-band (E-GSM900 and DCS1800) module that has received full type approval. 　

• Voice features:
  • Telephony
  • Emergency calls
  • Full Rate, Enhanced Full Rate, Half Rate FR/EFR/HR)
  • Echo Cancellation
  • Dual Tone Multi Frequency function (DTMF)
  • Voice Recognition/Commanding/Name dialing
• Data/fax features:
  • Non-transparent at 9600 bits/s
  • Automatic fax (Class 1)
• Short Messages Services features:
  • Point to point (MT/MO)
  • Storage of SMS (on SIM)
  • Cell Broadcast
  • Support UCS-2 character set messages
• Call service features:
  • Basic Services
  • Supplementary Services
• SIM Toolkit GPRS service features:
  • Interoperability with ETSI Standard Rel 97
  • WAP 1.2 (Optional)
  • GPRS class 10, Class B.
  • Quality of Service (QoS)
• Complete shielding AT command support:
  • Protocols supported:
    • V.25ter
    • GSM 07.07
    • GSM 07.05

CMS-91 Applications

• Size: 35mm x 35mm x 5mm L/W/H
• Weight:  10.5 g
• Power consumption:
  • Standby time:
    • 2/51 frames: 10.59 mW
    • 5/51 frames: 6.61 mW
    • 9/51 frames: 5.44 mW
  • Talk time:
    • GSM900 @ 33dBm(Class 4) 970 mW
    • GSM1800 @ 30dBm(Class 1) 770 mW
• Power supply:
  • Peak current:
    • Duration 577 usec: 2.1 A
    • BB single:
      • Fixed voltage: 2.3 V
    • BB interface:
      • Digital voltage: 2.7 V
      • Analoge:
        • Maximum: 2.75 V
      • RF: 2.7 to 2.8 V
• Temperature:
  • FTA performance: -10°C to 35°C
  • Operation: -20°C to +55°C
  • Storage: -45°C to +85°C
• Frequency coverage
  • Downlink1: 925 to 960 MHz
  • Uplink2: 880 to 915 MHz
  • Downlink1: 1805 to 1880 MHz
  • Uplink2: 1710 to 1785 MHz
• Interfaces:
  • RS-232 and audio through mini sub-D 15-pin connector
  • Remote control by AT commands (GSM 07.07 and 07.05)
  • Baud rate from 300 to 115,200 bits/s
  • Sliding SIM holder (3V/5V SIM interface)