Page 44 of 44 Configuration options
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
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,
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
