I am sometimes asked to look at an Officeserv 7100 system for a customer who I provide computer support to, so not an expert by any means on these systems.

One extension is having an intermittent problem when they pop a call on hold and speak to other extensions on the system. When they use the red hold button to put the call on hold and then later try to release the call from hold, the caller is sometimes not released from hold and is left "in limbo". on the phone which put the call on hold, it shows a message saying "no port on hold".

Does anyone have any idea or experienced this problem themselves?