Figure 2-24 Auto Mode Example - NEC Univerge SV8100 Features And Specifications Manual

UNIVERGE SV8100
 By default routers do not pass Multicast packets between subnets. If you have IP phones in different subnets than the
IPLA, and you are trying to utilize Multicast paging, you have to program the router to pass the Multicast packet.
Routing of Multicast Packets is not a default routing feature and should be confirmed with the manufacturer of the
routing equipment.
 The default multicast address utilized by the SV8100 is 224.0.0.10. It should be noted that many routing devices
available do not support multicast within the range of 224.0.0.0/24 and may require the default address to be changed
in the SV8100.
IPLA DSP Resource Selection
With Version 3000 software three additional IPLA DSP resource assignments are available. The new
assignments are: Common without Unicast Paging, Multicast Paging, and Unicast Paging. The
new assignments assist with keeping IP phones from using all available DSP resources when utilizing
Unicast Paging.
When the DSP resource is set to Common without Unicast Paging the resource can be accessed by
anything but a Unicast page.
When the DSP resource is set to Multicast Paging the resource can only be accessed by a Multicast
page no other device/feature can access this resource.
When the DSP resource is set to Unicast Paging the resource can only be accessed by a Unicast page
no other device/feature can access this resource.
Conditions
Version 3000 or higher software is required to switch between Multicast and Unicast

Paging. Prior to Version 3000 software IP phones utilized Multicast Paging.
Unicast/Multicast Paging Mode

Figure 2-24 Auto Mode Example

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