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The SIP Network Server uses a load-balancing
server to distribute incoming requests between multiple
proxy servers, thereby providing high degree of scalability.
The SIP Proxy Servers are accessible through the Load
Balancer (LB). The publicly known SIP Server address
for the domain is the address of the LB. The LB monitors
the load on each SIP Proxy Server in the server farm
and distributes new requests accordingly.
The high availability setup of the SIP
Network Server is realized by deploying a mated pair
of LBs running over a subnet with one of them in the
ACTIVE and the other in the STAND-BY mode. The role
switchover occurs upon hardware/software failures and
the STAND-BY system becomes ACTIVE, taking over the
HA IP using, which the users connect to the system.
This ensures that connectivity with the users does not
break and transactions do not stop in failure conditions.
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SIP Network
Server Architecture |
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