Hello, Any insight into this would be very helpful! I have exhausted my search of Freeswitch and Polycom. I have no idea how to solve this issue L I have a great working setup with VVX 300s 400s 500s and a IP 6000, however there is a strange issue going on with an IP 7000 I have. When calling to or from IP 7000 1. It rings fine with audio on both ends 2. Press answer on either side 3. Call is immediately "Held" on IP 7000 4. Green lights flash on IP 7000 as if the call was placed on hold by the other phone, but call is not on hold by other phone 5. No audio (probably because on hold) 6. End call normally NAT settings are correct - Formatted IP 7000 and reset all config - Reinstalled firmware - Disconnected from provisioning server - Created manual config from scratch on phone web interface - Removed all encryption IP 7000 logs during call: 003219.281|net |2|03|NWIF: nw_setlocalhold() - setting local hold (0) 2. 003219.341|net |2|03|NWIF: nw_setlocalhold() - setting local hold (0) 2. 003219.500|net |4|03|rtosNetwork: netwTask() - Can't find associated CCB. 003220.080|net |4|03|rtosNetwork net02: netwSend() - sendto() call failed. fd 1123346772 errno=130 003220.861|net |2|03|NWIF: nw_setlocalhold() - setting local hold (0) 2. 003221.600|net |4|03|rtosNetwork: netwTask() - Can't find associated CCB. 003223.600|net |4|03|rtosNetwork: netwTask() - Can't find associated CCB. Then press hang-up: 003227.600|net |4|03|rtosNetwork: netwTask() - Can't find associated CCB. 003227.985|net |2|03|NWIF: nw_setlocalhold() - setting local hold (1) 2. 003242.982|sip |5|03|Can not decode the packet - Setting local hold (0) should be fine and it works on all other phones I have. - Setting local hold (1) after pressing hang-up is weird but is happening after hang-up anyway. - I wonder why that send error is in the logs. it looks like an operating system error.. Maybe a driver error? Thanks in advance!! Adrian