NEC SL1000 Features And Specifications Manual page 718

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SL1000/SL1100

• You can assign up to 16 IP Terminals in an Internal or All call paging group.

• When using Unicast mode, there must be an available DSP recourse for each IP Terminal in the

page group at the time of the internal page. If the resources are less than the number of IP

Terminals, the page will be delivered to the IP Terminals with the lowest port numbers. IP Terminals

that cannot obtain a DSP resource will not receive the page.

• IP Terminals via NAT cannot utilize Multicast paging. These terminals must use Unicast paging.

• The ability to assign Unicast or Multicast on an IP Terminal basis, is restricted to internal paging

only. Other Multicast features (External MOH, Background Music, Room Monitor) cannot utilize

• For an IP Terminal to utilize the Multicast feature the IP Terminal must have a gateway programmed

to accomplish the multicast transmission. When an actual gateway device does not exist on the

network, a dummy gateway address on the same subnet must be defined.

• When utilizing Multicast mode and a page group consists of all IP Terminals, the page is sent via a

multicast message from the initiating phone. If a paging group has IP and TDM Terminals, when an

IP Terminal initiates the page, a message is sent to the VoIPDB and the VoIPDB sends the

Multicast message for the IP Terminals.

• When using the G.711 Codec for multicast paging, only 10ms, 20ms, 30ms, and 40ms frame sizes

can be used.

Default Settings

System Availability

All IP Terminals

Required Component(s)

CPU and IP4WW-VOIPDB-C1

Router that supports Multicast Packets if utilizing Multicast Mode

Related Features

IP Multiline Station (SIP)

Meet Me Paging

Meet Me Paging Transfer

Paging, External

Paging, Internal

Unicast/Multicast Paging Mode