Customizing the VC110 Video Conferencing Endpoint77If the call history is more than one page, you can press or to turn pages.4. Press (Add to Contact soft key).5. Enter contact name in the Name field.You can add more than one number for the contact. For more information, refer to AddingLocal Contacts on page 62.6. Press (Save soft key) to save the contact.Call history management feature is configurable via the web user interface at the pathDirectory->History.Call ProtocolThe VC110 video conferencing endpoint supports SIP and H.323 call protocols. H.323 iscommonly used to communicate to other video conferencing endpoints. SIP is commonly usedto communicate with other VoIP devices. You can configure which protocol is to be used whenthe endpoint is making calls. When the Auto call protocol is used, the endpoint preferentiallyuses the H.323 protocol to place calls. If there is no available H.323 account on the endpoint, theendpoint will switch to the SIP protocol. You can also specify the desired protocol for theendpoint to place calls via the remote control or web user interface.Note Before configuring call protocol, ensure the remote endpoint supports the call protocol too. Formore information, contact your system administrator.