Asterisk 1.8.5 Polycom Bootrom 4.4.0 Polycom spip 4.0.1 They are all sip devices talking to each other. Polycom phone A puts polycom phone B on hold, Phone A tries to unhold the caller but the line button is still flashing on hold like nothing happened. All sip peers are directmedia/canreinvite=no, no nat, all communication is on the local lan. It's as simple as it can be. I haven't touched my asterisk version in a while and all of a sudden this started happening. I'll have a sip debug in the next day or two, but in the meantime is there something someone can shed some light on? Thanks, -Mark