Sip Timer Values (Sec) - Cisco SPA303 Administration Manual

Cisco SPA IP Phone Field Reference
SIP Tab
Cisco Small Business SPA300 Series, SPA500 Series, and WIP310 IP Phone Administration Guide
Parameter
Hold Target Before REFER

SIP Timer Values (sec)

Parameter
SIP T1
SIP T2
SIP T4
SIP Timer B
SIP Timer F
SIP Timer H
SIP Timer D
SIP Timer J
INVITE Expires
Description
Controls whether to hold call leg with transfer target
before sending REFER to the transferee when initiating
a fully-attended call transfer (where the transfer target
has answered). Default value is "no," where the call leg
is not held.
NOTE Not applicable to WIP310.
Description
RFC 3261 T1 value (RTT estimate), which can range
from 0 to 64 seconds. Defaults to .5 seconds.
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.
RFC 3261 T4 value (maximum duration a message
remains in the network), which can range from 0 to 64
seconds. Defaults to 5 seconds.
INVITE time-out value, which can range from 0 to 64
seconds. Defaults to 16 seconds.
Non-INVITE time-out value, which can range from 0 to
64 seconds.Defaults to 16 seconds.
INVITE final response, time-out value, which can range
from 0 to 64 seconds.Defaults to 16 seconds.
ACK hang-around time, which can range from 0 to 64
seconds. Defaults to 16 seconds.
Non-INVITE response hang-around time, which can
range from 0 to 64 seconds. Defaults to 16 seconds.
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 seconds.
B
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