Nortel-networks 1000S Manuel d'utilisateur télécharger pdf (Page 44)

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553-3031-010 Standard 3.00 August 2005

The survivable MG 1000S (Alternate Call Server) IP address must be on the

same ELAN subnet as the Call Server. If the MG 1000S is on a physically

different subnet, such as in a different building, then you can use VLANs to

keep IP addresses on the same logical subnet. For further implementation

details, refer to Data Networking for Voice over IP (553-3001-160).

If there are different nodes in different MG 1000S, then the nodes can be

configured to register to different Alternate Call Servers. This concept is

desirable for optimizing system reliability to best deal with possible system

outages. Associate each IP telephony node with an appropriate (for example,

co-located) Alternate Call Server.

If the node IDs are configured using the guidelines for the ‘Enhanced

Redundancy for IP Line Nodes’ feature, then the IP Phones can register (if

needed) to an alternate node on an MG 1000S Expander. This further

improves the survivability of the IP Phones by allowing them to register to a

different node should a system outage occur on their primary node's

MG 1000S.

Refer to IP Line: Description, Installation, and Operation (553-3001-365)

for a description of the Enhanced Redundancy for IP Line Nodes feature.

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Nortel-networks 1000S Manuel d'utilisateur Page 44