The VVX phones cannot have dual registration wherein one line of the phone is registered with PBX and the other line integrates with Lync. The only way to achieve this would be to integrate the VVX phone with Lync and then a SIP trunk is created between the Lync Server and PBX via a mediation server role on Lync.
VVX - Dual Registration with a PBX for PSTN & Lync Print
Modified on: Sat, 31 Jan, 2015 at 2:38 PM
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