Cisco SPA112 Administration Manual page 54

Configuring the Voice Settings
SIP
Cisco SPA100Series Administration Guide
SIP Timer Values
Field
SIP T1
SIP T2
SIP T4
SIP Timer B
SIP Timer F
SIP Timer H
SIP Timer D
SIP Timer J
INVITE Expires
ReINVITE Expires
Description
RFC 3261 T1 value (round-trip time estimate), which can
range from 0 to 64 seconds.
Default setting: 0.5
RFC 3261 T2 value (maximum retransmit interval for non-
INVITE requests and INVITE responses), which can range
from 0 to 64 seconds.
Default setting: 4
RFC 3261 T4 value (maximum duration a message remains
in the network), which can range from 0 to 64 seconds.
Default setting: 5
INVITE time-out value, which can range from 0 to 64
seconds.
Default setting: 32
Non-INVITE time-out value, which can range from 0 to 64
seconds.
Default setting: 32
H INVITE final response, time-out value, which can range
from 0 to 64 seconds.
Default setting: 32
ACK hang-around time, which can range from 0 to 64
seconds.
Default setting: 32
Non-INVITE response hang-around time, which can range
from 0 to 64 seconds.
Default setting: 32
INVITE request Expires header value. If you enter 0, the
Expires header is not included in the request. Range: 0–
(2 31 1)
–
Default setting: 240
ReINVITE request Expires header value. If you enter 0, the
Expires header is not included in the request. Range: 0–
(2 31 1)
–
Default setting: 30
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