Conditions
• You can assign up to 32 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
Unicast.
• 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
Multicast
System Availability
Terminals
All IP Terminals
Required Component(s)
IP Terminal
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
ISSUE 2.0
SL1100
Features and Specifications Manual
1-763
U
Summary of Contents for SL1100
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