Polycom CX5500 Unified Conference Station Administrator’s Guide 1.1.0
Polycom, Inc. 291
If set to private, use standard call signaling. If set to shared, augment call signaling with call state subscriptions and
notifications and use access control for outgoing calls.
1
Change causes phone to restart or reboot.
You can list multiple registration servers for fault tolerance. In the table Registration Server Parameters,
you can list four servers by using y=1 to 4. If the reg.x.server.y.address is not null, all of the
parameters in the following table will override the parameters specified in voIpProt.server.*. The
server registration parameters are listed in the following table:
Registration Server Parameters
reg.x.server.H323.y.expires
Desired registration period.
dotted-decimal
IP address or
hostname
The IP address or host name of a SIP server that accepts registrations. If not Null, all of the parameters in this
table will override the parameters specified in voIpProt.server.*. Notes: If this parameter is set, it will take
precedence even if the DHCP server is available.
positive integer,
minimum 10
The phone’s requested registration period in seconds. Note: The period negotiated with the server may be
different. The phone will attempt to re-register at the beginning of the overlap period. For example, if
expires=”300” and overlap=”5”, the phone will re-register after 295 seconds (300–5).
reg.x.server.y.expires.lineSeize
Requested line-seize subscription period.
reg.x.server.y.expires.overlap
The number of seconds before the expiration time returned by server x at which the phone should try to re-
register. The phone will try to re-register at half the expiration time returned by the server if the server value is
less than the configured overlap value.
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