Linksys SPA 900 Series Manual De Usuario
5-11
Linksys IP Phone Administrator Guide
Firmware Version 5.1
Chapter 5 Linksys IP Phone Field Reference
SIP Tab
SIP Timer Values (sec)
Note
None of the following parameters apply to the SPA901.
Field
Description
SIP T1
RFC 3261 T1 value (RTT estimate), which can range from 0 to 64 seconds. Defaults to .5
seconds.
seconds.
SIP T2
RFC 3261 T2 value (maximum retransmit interval for non-INVITE requests and INVITE
responses), which can range from 0 to 64 seconds. Defaults to 4 seconds.
responses), which can range from 0 to 64 seconds. Defaults to 4 seconds.
SIP T4
RFC 3261 T4 value (maximum duration a message remains in the network), which can
range from 0 to 64 seconds. Defaults to 5 seconds.
range from 0 to 64 seconds. Defaults to 5 seconds.
SIP Timer B
INVITE time-out value, which can range from 0 to 64 seconds. Defaults to 16 seconds.
SIP Timer F
Non-INVITE time-out value, which can range from 0 to 64 seconds.Defaults to 16
seconds.
seconds.
SIP Timer H
INVITE final response, time-out value, which can range from 0 to 64 seconds.Defaults to
16 seconds.
16 seconds.
SIP Timer D
ACK hang-around time, which can range from 0 to 64 seconds. Defaults to 16 seconds.
SIP Timer J
Non-INVITE response hang-around time, which can range from 0 to 64 seconds. Defaults
to 16 seconds.
to 16 seconds.
INVITE Expires
INVITE request Expires header value. If you enter 0, the Expires header is not included
in the request. Ranges from 0 to 19999999999999999999999999999999. Defaults to 240.
in the request. Ranges from 0 to 19999999999999999999999999999999. Defaults to 240.
ReINVITE Expires
ReINVITE request Expires header value. If you enter 0, the Expires header is not included
in the request. Ranges from 0 to 19999999999999999999999999999999. Defaults to 30.
in the request. Ranges from 0 to 19999999999999999999999999999999. Defaults to 30.
Reg Min Expires
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.
a Contact header parameter. If the proxy returns a value less than this setting, the
minimum value is used.
Defaults to 1.
Reg Max Expires
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.
If the value is larger than this setting, the maximum value is used.
Defaults to 7200.
Reg Retry Intvl
Interval to wait before the Linksys IP phone retries registration after failing during the last
registration.
registration.
Defaults to 30.
Reg Retry Long Intvl
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 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.
Defaults to 1200.