Figure 1-48 Unicast Mode Example; Figure 1-49 Auto Mode Example - NEC SL2100 Features And Specifications Manual

SL2100
U
By default routers do not pass Multicast packets between subnets. If you have IP Terminals in different
subnets than the VoIPDB, 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 SL2100 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 SL2100.
VoIPDB DSP Resource Selection
Three additional VoIPDB DSP resource assignments are available. The assignments are: Common
without Unicast Paging, Multicast Paging, and Unicast Paging. The assignments assist with
keeping IP Terminals 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.
1-852
Paging Group
VoIPDB
ESI
TDM

Figure 1-48 Unicast Mode Example

Paging Group
Multicast
VoIPDB
ESI
TDM

Figure 1-49 Auto Mode Example

IP
IP
IP
Subnet 1
IP
Subnet 2
IP
IP
IP
Subnet 1
IP
Subnet 2
Unicast/Multicast Paging Mode
ISSUE 1.0
Mode: Multicast
Mode: Multicast
Mode: unicast
Mode: unicast
Mode: Auto
Mode: Auto
Mode: Auto
Mode: Auto