Features:
  1.Language support: English
  2.Record the outgoing and incoming call numbers and the calling time；
  3.IFWP settings include tone types, tone volume and voice volume etc
  4.Support various alert tones, such as charging alert tone, message alert tone, keypad tones etc；
  5.Support various tones, at least 10 ringing tones in midi format
  6.Support parameter settings such as data rate
  7.Real time clock
  8.Incoming call number display
  9.Various call diverting and call waiting
  10.Don't Disturb Service
  11.Message function: support English two-direction message sending. Capacity of one message
      contents is at most 160 English characters, 200 entries
  12.Support OTA function
  13.Low power consumption. In idle status, the current is about 10mA(RX=-95dbm and SCI=2),in
      talk status, the current is about 500mA(RC3 mode and RX=-95dbm)

  Functions:
    1) Voice Operation
      - Support caller and callee calling, three-way calling, conference calling
      - Support QCELP 13K and EVRC 8K voice algorithm
      - Support hand free function
  2) Data Operation
      - PC modem G3 digital fax of Circuit switched data service conforms to the IS707 standard
      - The forward/reverse link data rate of the packet data services can reach to 153.6kbps
  3) Message
      - Support English message, including message receiving, sending, reading, replying and forwarding
  4) Testing call
      -Support Markov Service Option (MSO) and Loop-back Service Option (LSO)

  Working Environment:
  1.Environmental temperature: -10°C~50°C
  2.Relative humidity: 10%~95%
  3.Environment noise level: ≤60dB(A)
  4.Atmosphere pressure: 86kPa~106kPa