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