Cisco IP Phone 6841, Administration Manual

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Description Parameter
RFC 3261 T4 value (maximum duration a message remains in the
network), which can range from 0 to 64 seconds.
Default: 5 seconds.
SIP T4
INVITE time-out value, which can range from 0 to 64 seconds.
Default: 16 seconds.
SIP Timer B
Non-INVITE time-out value, which can range from 0 to 64 seconds.
Default: 16 seconds.
SIP Timer F
INVITE final response, time-out value, which can from 0 to 64 seconds.
Default: 16 seconds.
SIP Timer H
ACK hang-around time, which can range from 0 to 64 seconds.
Default: 16 seconds.
SIP Timer D
Non-INVITE response hang-around time, which can range from 0 to
64 seconds.
Default: 16 seconds.
SIP Timer J
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
INVITE Expires
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
ReINVITE 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. Reg Min 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. Reg Max Expires
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.
Reg Retry Intv
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