Routed Head Quarter configuration 173Prompt Response DescriptionIMS YES Enable IMS...Table 25LD 15: Enable Message CenterPrompt Response DescriptionREQ CHGTYPE FTR FTR_DATACUST n n = customer number...OPT MCI Message Center included...Routed Head Quarter configurationIn this configuration, there is more than one network segment in theHead Quarter. The routers in this configuration must forward IP multicastpackages. Network components, such as switches and routers, must becorrectly configured for VoIP and IP multicast. The network must supportIP multicast between all network components that are used for IP DECTSystem.You can edit the following settings:• Time to Live (TTL) value—The Time to Live value is used for themulticast traffic. If the Time to Live for the multicast is set to 1,multicast traffic is not forwarded by a Router. If the Time to Live ishigher than 1, multicast packages can be forwarded by the Router,depending on settings in the Router. If the TTL (for the multicastpackages) is set to 1, leave this aggregated subnet mask empty. Ifthe TTL (for the multicast packages) is set to a value higher than1, fill in this aggregated subnet mask to signal to the system whichsmaller subnets are connected together as one subnet using a routersupporting IP multicast.• Aggregated Subnet mask—The aggregated subnet mask is thesubnet mask for the DAPs to determine the network boundaries foran IP DECT Network in which seamless hand over is possible. UseG.711, which covers the network segments connected together usingrouters that support IP multicast.If there are DAPs outside this aggregated subnet mask, regard theDAP or DAPs as in a branch office. Note that the IP address of thePBX is compared with the IP address or addresses of the DAP orDAPs using this subnet mask. If the IP addresses are in differentNortel Communication Server 1000SIP DECT FundamentalsNN43120-123 01.076 January 2009Copyright © 2008-2009 Nortel Networks.
