one phone

  1. Fr. Andrew Boyd

    Multiple PBX systems, one IP phone

    Greetings all: Our office is running 3CX and our residence is running Incredible PBX. I have extension 38 registered to a Cisco SPA504G phone in my residence which is connected to our office PBX running 3CX. I also have extension 101 registered to a Grandstream GXP1625 phone in my residence...
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