Poly VVX 311/411 – Placing Call on Hold and Resuming Call from Hold Michael HarroldOctober 1, 2018Polycom VVX 311/411 Video source missing Home|End Users Hub|Phones and Voicemail|Poly VVX 311/411 Videos|Poly VVX 311/411 - Placing Call on Hold and Resuming Call from Hold