GSM Billing Desktop Telephone

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GSM Billing Desktop Telephone
Posting date : Mar 29, 2007
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85-
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Technical specification 1) Working condition Environment temperature: 0 ~ +50Celsius Relative humidity: 10%~95% Air pressure: 86~106kPa Environment yawp: ≤60dB(A) 2) Working frequency: GSM900MHz/GSM1800 MHz 3) Stability of frequency: Better then 2.5PPM 4) Delicacy of signal: -103dBM 5) Emission power: <2w 6) 220v AC power supply 7) Continuous call time duration when using battery: 2-3 hours 8) Continuous standby time duration when using battery: 48-72 hours (related to network condition)

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