IP Office Basic Edition - Analog Phone User Guide: Call Handling
To put a call on hold:
1.During the call, press your phone's recall button (probably marked R or RECALL). You are connected to normal dial tone and can make another call if necessary.
•If you have held a call, hanging up leaves the call on hold. However, after a short period, 15 seconds by default, the held call will re-ring your phone.
•If you have two calls in progress, one connected and one on hold, hanging up will connect the two calls together (see Transferring Calls).
•If you have two calls in progress, one connected and one on hold, pressing your phone's recall button will start a conference between all the calls.