Polycom CX5500 Administrator's Manual page 292

Polycom CX5500 Unified Conference Station Administrator's Guide
Parameter
reg.x.server.y.failOver.failBack.mode
The mode for failover failback (this parameter overrides voIpProt.server.x.failOver.failBack.mode):
newRequests – all new requests are forwarded first to the primary server regardless of the last used server.
DNSTTL – the phone tries the primary server again after a timeout equal to the DNS TTL configured for the
server that the phone is registered to.
registration – the phone tries the primary server again when the registration renewal signaling begins.
duration – the phone tries the primary server again after the time specified by
reg.x.server.y.failOver.failBack.timeout.
reg.x.server.y.failOver.failBack.timeout
The time to wait (in seconds) before failback occurs (overrides
voIpProt.server.x.failOver.failBack.timeout).If the fail back mode is set to Duration, the phone
waits this long after connecting to the current working server before selecting the primary server again. If 0, the
phone will not fail-back until a fail-over event occurs with the current server.
reg.x.server.y.failOver.failRegistrationOn
When set to 1, and the reRegisterOn parameter is enabled, the phone will silently invalidate an
existing registration (if it exists), at the point of failing over. When set to 0, and the reRegisterOn
parameter is enabled, existing registrations will remain active. This means that the phone will attempt
failback without first attempting to register with the primary server to determine if it has recovered.
reg.x.server.y.failOver.onlySignalWithRegistered
When set to 1, and the reRegisterOn and failRegistrationOn parameters are enabled, no signaling is
accepted from or sent to a server that has failed until failback is attempted or failover occurs. If the
phone attempts to send signaling associated with an existing call via an unregistered server (for
example, to resume or hold a call), the call will end. No SIP messages will be sent to the unregistered
server. When set to 0, and the reRegisterOn and failRegistrationOn parameters are enabled,
signaling will be accepted from and sent to a server that has failed (even though failback hasn't been
attempted or failover hasn't occurred).
reg.x.server.y.failOver.reRegisterOn
This parameter overrides the voIpProt.server.x.failOver.reRegisterOn. When set to 1, the phone will
attempt to register with (or via, for the outbound proxy scenario), the secondary server. If the registration
succeeds (a 200 OK response with valid expires), signaling will proceed with the secondary server. When set to
0, the phone won't attempt to register with the secondary server, since the phone will assume that the primary
and secondary servers share registration information.
reg.x.server.y.lcs
If 0, the Microsoft Live Communications Server (LSC) is not supported. If 1, LCS is supported for registration x.
reg.x.server.y.useOutboundProxy
Specify whether or not to use the outbound proxy specified in
server x. This parameter overrides
Polycom, Inc.
voIpProt.server.x.useOutboundProxy
Permitted Values
newRequests
DNSTTL
registration
duration
0, 60 to 65535
0 or 1
0 or 1
0 or 1
0 or 1
0 or 1
reg.x.outboundProxy.address
for registration x.
1.1.0
Default
newRequests
3600
0
1
0
0
1
for
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