Cisco Ip Phone 8800 Series Multiplatform Phones Administration Guide - Cisco 8851 Administration Manual

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Parameter
SIP Timer J
INVITE Expires
ReINVITE Expires
Reg Min Expires
Reg Max Expires
Reg Retry Intv
Reg Retry Long Intvl
Reg Retry Random Delay
Reg Retry Long Random Delay

Cisco IP Phone 8800 Series Multiplatform Phones Administration Guide

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Description
Non-INVITE response hang-around time, which can range from 0 to
64 seconds.
Default: 16 seconds.
INVITE request Expires header value. If you enter 0, the Expires header
is not included in the request. Ranges from 0 to 2000000.
Default: 240 seconds
ReINVITE request Expires header value. If you enter 0, the Expires
header is not included in the request. Ranges from 0 to 2000000.
Default: 30
Minimum registration expiration time allowed from the proxy in the
Expires header or as a Contact header parameter. If the proxy returns a
value less than this setting, the minimum value is used.
Maximum registration expiration time allowed from the proxy in the
Min-Expires header. If the value is larger than this setting, the maximum
value is used.
Interval to wait before the Cisco IP Phone retries registration after failing
during the last registration.The range is from 1 to 2147483647
Default: 30
See the note below for additional details.
When registration fails with a SIP response code that does not
match<Retry Reg RSC>, the Cisco IP Phone waits for the specified
length of time before retrying. If this interval is 0, the phone stops trying.
This value should be much larger than the Reg Retry Intvl value, which
should not be 0.
Default: 1200
See the note below for additional details.
Random delay range (in seconds) to add to <Register Retry Intvl> when
retrying REGISTER after a failure. Minimum and maximum random
delay to be added to the short timer. The range is from 0 to 2147483647.
Default: 0
Random delay range (in seconds) to add to <Register Retry Long Intvl>
when retrying REGISTER after a failure.
Default: 0