Basic Call Feature135Using Multicast PagingTo send RTP stream via the paging list:1. Do one of the following to enter the paging list.- When the phone is idle, press the second line key (indicating the paging list key) orpress Menu->Features->Paging List.- During a call, press the second line key (indicating the paging list key).- During a call, press Hold->NewCall, and then press the second line key (indicatingthe paging list key).2. Press or to select the desired group.3. Press or the Paging soft key to send RTP.Both the sender’s and receiver’s phones play a warning tone and the receiver automaticallyanswers the multicast RTP session in the speakerphone mode.The following figure shows a multicast RTP session on the phone:4. To place the current multicast RTP session on hold, press the Hold soft key.The sender’s phone places the multicast RTP session on hold and receiver’s phone releasesthe session.5. To resume the held multicast RTP session, press the Resume soft key.The multicast RTP session is established again.6. To end the multicast RTP session, press the EndCall soft key.NoteBranch Office ResiliencyIf you sign into the phone using Onprem account, you can use branch office resiliency feature.Current Online environment does not support this feature.Branch office resiliency is critical for multi-site deployments of Skype for Business where theMulticast RTP is one way only from the sender to the multicast address(es) (receiver). Foroutgoing RTP multicasts, all other existing calls on the phone will be placed on hold.
