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  1. Solved Grandstream Phone Not Provision V16.0.1.273

    You rock Fredrick, the DHCP option cause the conflict, we are migrating to new phone system and not aware the old system has DHCP option 66 in place, the provision working fine now, you save my day, thanks
  2. Solved Grandstream Phone Not Provision V16.0.1.273

    Yes the 3CX is local installation not cloud. I did factory reset the phones. Validate Server Certificates setting is No Thanks.
  3. Solved Grandstream Phone Not Provision V16.0.1.273

    New 3CX setup v16.0.1.273 (Not upgrade), 3CX and IP Phones on same subnet. I have two Granstream models GXP2170 and GXP2135, they all upgraded to firmware 1.0.9.132 which downloaded from 3CX Phones show up in PNP, after assign extension to the phones, the new provision link updated in the Config...
  4. E164 Processing on Deskphone(CTI)

    We have E164 setup to strip "+1" and add prefix "9" when making outbound calls from phonebook contacts, this working no problem in Softphone (Win/iOS) mode but the same technique doesn't apply to Destphone(CTI) mode, the country code "1" not being removed and no prefix 9 is added onto my IP...
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