Routed Head Quarter Configuration - Nortel CS 1000 Manual

146 SIPN configuration
Routed Head Quarter configuration
In this configuration, more than one network segment is in the Head
Quarter. The routers in this configuration must forward IP multicast
packages. You must configure network components, such as switches and
routers, for VoIP and IP multicast. The network must support IP multicast
between all network components used for IP DECT System.
You can edit the following settings:
•
Time to Live (TTL) value—The Time to Live value is used for the
multicast traffic. If the Time to Live for multicast is set to 1, multicast
traffic is not forwarded by a Router. If the Time to Live is greater than
1, multicast packages can be forwarded by the Router, depending on
settings in the Router. If the TTL (for the multicast packages) is 1,
leave this aggregated subnet mask empty. If the TTL (for the multicast
packages) is greater than 1, fill in this aggregated subnet mask to
signal which smaller subnets are connected as one subnet using a
router supporting IP multicast.
•
Aggregated Subnet mask—The aggregated subnet mask is the subnet
mask for the DAPs to determine the network boundaries for an IP
DECT Network in which seamless handover is possible. Use G.711,
which covers the network segments connected using routers that
support IP multicast.
If DAPs are outside the aggregated subnet mask, regard the DAP or
DAPs as in a branch office. The IP address of the PBX is compared
with the IP address or addresses of the DAP or DAPs using this subnet
mask. If the IP addresses are in various subnets according to this
mask, the DAP or DAPs are supposed to be in a branch office. If the
IP addresses are in the same aggregated subnet according to this
mask, the system determines that the IP addresses are in the same
subnet.
The term aggregated means that the subnet consists of smaller
subnets connected over a router, but according to the subnet mask,
all behave as one subnet. This applies to the Routed Head Quarter
network solution without branch offices.
Routed Head Quarter configuration implies that various subnets are
connected through one or more routers. The subnets in the network
are part of one company network.
To create a Routed Head Quarter configuration, you must configure
the network components, such as the switches and the routers, for
VoIP and IP multicast. Also, the network must support IP multicast
between all network components used for the SIP DECT system.
Routed Head Configuration is the same as Simple configuration,
but includes one more step. For information, see
"Configuring Network Settings" (page
Nortel Communication Server 1000
SIP DECT Fundamentals
NN43120-123 02.02 30 March 2010
Copyright © 2008-2010 Nortel Networks. All Rights Reserved.
Procedure 46
112).