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Sonim XP7 without SIM doesn't work with VoIP?

Discussion in 'Android Apps & Games' started by Guillaume Soucy, Nov 16, 2018.

  1. Guillaume Soucy

    Thread Starter

    Hi there,

    I have an Sonim XP7 Android based cell phone and as my contract with my mobile provider was ended I decided to cancel the services with them and take an mobile hotspot to use my SIM less mobile phone using VoIP and WiFi from the LTE hotspot. We have a phone system running FreePBX, so I order an phone number from our telephony trunks provider, link it to the extension of my XP7 and set the SIP client on the Android phone for it can use a phone extension. But since I take off the SIM card from it, incoming calls has stopped to get in but I can make outgoing calls without any issues.

    Whenever if I dial the four digit extension or even if I dial the ten digit phone number, I fall on the voicemail of the extension that my Sonim is logged to.

    Is my Android phone really need an SIM card to be used as a VoIP (SIP) phone even if the SIM card is not be used at all as the communications was done by using the IEEE 802.11x ?


    Thanks in advance for your help!

    Guillaume
     


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