Unicast/Multicast Paging Mode - NEC UNIVERGE SV9100 Features And Specifications

Unicast/Multicast Paging Mode

Description
With SV9100 software the IP terminals (DT7XX) can receive an Internal Page via a Unicast or Multicast
packet based upon system programming. This feature allows IP terminals (DT7XX) to be assigned to
Unicast Mode, Multicast Mode, or Auto.
When the phone is set to Unicast Mode the internal paging is sent to the phone via a Unicast Packet.
When the phone is set to Multicast Mode the internal page is sent to the phone via a Multicast Packet.
When the phone is set to Auto, the internal page is sent to the phone either by Multicast or Unicast
based on the subnet of the IP station. If the DT7XX terminal is in the same subnet as the GPZ-IPLE then
it will receive the Internal Page via a Multicast Packet. If the DT7XX terminal is in a different subnet than
the GPZ-IPLE the DT7XX will receive the Internal Page via a Unicast Packet.
When phones are set to receive Unicast packets the GPZ-IPLE will send a separate RTP stream to each
phone that is set to receive the page. E.g. If there are five DT7XX IP phones in the page group and they
are all set to Unicast Page Mode the GPZ-IPLE will send five separate RTP streams utilizing five DSP
resources.
When the phones are set to receive Multicast packets the GPZ-IPLE will send one RTP stream.
Multicast is a protocol that allows one device to communicate to multiple devices without the need to
stream to the individual end point. E.g. If there are five DT7XX IP phones in the page group that are set
to Multicast Mode, the GPZ-IPLE will send one RTP stream utilizing only one DSP resource.
Multicast Mode Example
1264