Call Parking is a feature that allows a caller to be put on hold and any phone in your office can then retrieve this call. When a call is parked, the caller will hear your company's hold music. To adjust your company's hold music, please refer to this knowledge base article: Customizing Hold Music.
In order to park a call, you will need a currently active phone call.
Press the designated park line button on your phone. This will place the call in park. The park line button will illuminate red indicating a call has been parked. Typically the park line button is 700 and 701 located in the upper left-hand corner of your phone.
Once the call is parked anyone can pick that call up by either pressing a preprogrammed park button (the call will be illuminated in red), or by dialing the park line number and pressing send.