能修改IMEI码自动换卡GSM GATEWAY网关

我公司专为配合VOIP网关上车落地用而研发生产的GSM/CDMA网关，语音清晰，反极准确，质量稳定，不死机。参数与PSTN相同。价格优惠。

    而且可以修改IMEI码。有32张卡可以自动切换。有效突破封锁。是做VOIP上车、落地的最佳选择。产品极受全球欢迎。已经销售超过10000台。

相关参数如下：

Features:

 ◇   Dialing tonewith 450hz

◇   DTMF Dialing

◇   Bell signal

◇   Polarity reversal

◇   The RJ-11 socket which connect the phone or the payment

◇   Antenna socket (FME)

◇   IP usage switch

◇   Working state indicator

◇   Signal Strength indicator

Technical Specifications

GSM Module Dual band GSM 850mhz/900mhz/1800mhz/1900MHz
 Phone interface：supply RJ-11 Phone Interface

     Hanging voltage:45V  Picking off voltage：30mA/41mA

     Dialing tone Frequency：450Hz

 Antenna interface：Antenna amplifying 〉1.5DB

Sensitivity 〈 -104DBM

Transmitting power≤3W

 Adapter interface：INPUT：AC 175~260V

OUTPUT：+12V/1000MA

   Operation Circumstance: 

Operation temperature：-10℃~ 60℃

       Storage temperature：-20℃~ 70℃

       Operation humidity：45%—95%

       Atmosphere pressure：86—106Kpa

       Environment noise：〈60DB

       Transmitting Power: 2W

        Sensitivity: <-104dbm

        Antenna Amplifying: >1.5db

        Dialing frequency: 450Hz

        Hanging voltage: 45V

        Picking carrent: 30mA/41mA