Hardware Description and Reference for Avaya ... - Avaya Support

Linux-based media servers
Manager software easily and quickly eliminates the fragmentation between remote gateways in
the network created by LAN/WAN communication failures with the primary controller.
The G700/G350/G250 Media Gateway preserves stable calls when control changes from the
LSP to the primary controller. Stable calls are calls that are carrying active two-way or
multi-party conversations. Other calls such as those that are on hold are not preserved.
Note: The
Note:
fall-back from the LSP to the primary controller may also be manual using a
reset on the LSP. This reset breaks the communication between the LSP and
each registered endpoint. This break causes the endpoints to register with the
primary controller. However, most active calls are preserved.
Number of LSPs supported
The number of LSPs that a configuration can support depends on the controlling media server.
An S8500 Media Server, S8710 Media Server, or S8720 Media Server can support up to 250
LSPs. An S8300 Media Server can support up to 50 LSPs.
Translations
An automatic process copies translation changes when customers make changes on the
primary controller to each LSP.
LSP installation
The hardware for the S8300 Media Server as primary controller is identical to the hardware for
the S8300 Media Server as LSP. The difference between the two configurations is entirely in
software.
Note: An
Note:
S8300 Media Server and the LSP cannot reside in the same G700 Media
Gateway.
IP addressing of the primary controller, the LSP, and IP telephones
An LSP is administered with a different IP address than the IP address of the primary controller.
In addition, IP telephones obtain their own IP address from a DHCP server. The DHCP server
also sends a list of controllers, LSPs, and their associated IP addresses. The IP telephone then
registers with the controller corresponding to the first IP address in this list. When connectivity is
lost between the controller and the endpoint, the endpoint registers with the second IP address
in the list, and so on. This list can be administered for telephones on the DHCP server.
38 Hardware Description and Reference for Avaya Communication Manager