Linksys SPA1001 Administrator User Manual page 97

Chapter 5 Linksys ATA Field Reference
SIP Timer H
SIP Timer D
SIP Timer J
INVITE Expires
ReINVITE Expires
Reg Min Expires
Reg Max Expires
Reg Retry Intvl
Reg Retry Long Intvl
Reg Retry Random Delay
Reg Retry Long Random Delay
Reg Retry Intvl Cap
Document Version 3.2
INVITE final response, time-out value, which can range from 0 to 64 seconds.
The default is 32.
ACK hang-around time, which can range from 0 to 64 seconds.
The default is 32.
Non-INVITE response hang-around time, which can range from 0 to 64 seconds.
The default is 32.
INVITE request Expires header value. If you enter 0, the Expires header is not included
in the request.
The default is 240. Range: 0–(2
ReINVITE request Expires header value. If you enter 0, the Expires header is not
included in the request.
The default is 30. Range: 0–(2
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.
The default is 1.
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.
The default is 7200.
Interval to wait before the Linksys IP phone retries registration after failing during the last
registration.
The default is 30.
When registration fails with a SIP response code that does not match<Retry Reg RSC>,
the Linksys IP phone waits for the specified length of time before retrying. If this interval
is 0, the Linksys IP phone stops trying. This value should be much larger than the Reg
Retry Intvl value, which should not be 0.
The default is 1200.
Random delay range (in seconds) to add to <Register Retry Intvl> when retrying
REGISTER after a failure. This feature was added in Release 5.1.
The default is 0, which disables this feature.
Random delay range (in seconds) to add to <Register Retry Long Intvl> when retrying
REGSITER after a failure. This feature was added in Release 5.1.
The default is 0, which disables this feature.
The maximum value to cap the exponential back-off retry delay (which starts at <Register
Retry Intvl> and doubles on every REGISTER retry after a failure). In other words, the
retry interval is always at <Register Retry Intvl> seconds after a failure. If this feature is
enabled, <Reg Retry Random Delay> is added on top of the exponential back-off adjusted
delay value. This feature was added in Release 5.1.
The default value is 0, which disables the exponential back-off feature.
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Linksys IP Phone Administrator Guide
SIP Tab
5-13