gxp2160

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    3-Way Conference Button - No dial tone - Does not call 3rd party

    Grandstream GXP2160s - Latest Firmware - New client This does work when testing from our GXP2160s. The issue seems to be for all phones of this single client. User places or receives a call Presses the conference button (icon with 3 people on it) No dial tone at this point (there should be)...