System information

Configuring Voice
Configuring Voice Settings
Cisco SPA100 Series Phone Adapters Administration Guide 65
4
SIP Timer Values
Mark all AVT Packets If set to yes, all AVT tone packets (encoded for
redundancy) have the marker bit set. If set to no,
only the first packet has the marker bit set for each
DTMF event. Default setting: Yes
SIP TCP Port Min Specifies the lowest TCP port number that can be
used for SIP sessions.
Default setting: 5060.
SIP TCP Port Max Specifies the highest TCP port number that can
be used for SIP sessions.
Default setting: 5080.
Field Description
SIP T1 RFC 3261 T1 value (RTT estimate), which can
range from 0 to 64 seconds. Default setting: 0.5.
SIP T2 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.
SIP T4 RFC 3261 T4 value (maximum duration a message
remains in the network), which can range from 0 to
64 seconds. Default setting: 5.
SIP Timer B INVITE time-out value, which can range from 0 to
64 seconds. Default setting: 32.
SIP Timer F Non-INVITE time-out value, which can range from 0
to 64 seconds. Default setting: 32.
SIP Timer H H INVITE final response, time-out value, which can
range from 0 to 64 seconds. Default setting: 32.
SIP Timer D ACK hang-around time, which can range from 0 to
64 seconds. Default setting: 32.
SIP Timer J Non-INVITE response hang-around time, which can
range from 0 to 64 seconds. Default setting: 32.
Field Description