ICX 500 Gateway
Doc.no.A100K12202
Page 112
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AMC 11.5.3.1 or later
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AlphaPro 11.6.3.9 or later
7.3.12. Failover to redundant SIP server
Failover is switching to a redundant or standby SIP server upon the failure of the primary SIP
server. The failover is automatic and operates without warning. The switchover time is less
than 5 seconds from a failure of the primary SIP server.
At failover, calls are automatically routed to secondary SIP server
The ICX-500 uses a "heartbeat" message (SIP OPTIONS) to check if the SIP servers are
online. As long as the primary SIP server is online, calls will be routed to this server. If the
primary SIP server goes off-line, calls will be routed to the secondary server. As soon as the
primary server comes back online, calls will be routed to this server again.
Software requirement:
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AMC 11.5.3.1 or later
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AlphaPro 11.6.3.9 or later
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Failover to redundant SIP server is not supported when using SIP
Trunk Station, i.e SIP directory numbers with feature 9.
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Failover is supported only when using directory numbers with feature
number 81 and feature number 83.
7.3.12.1.
Configure the Failover routing
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Two SIP Trunk nodes must be created in AlphaPro in the "standard" way.
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Monitoring SIP Trunk must be enabled, as described in previous paragraph