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SPA9000 Field Reference
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SPA9000 Voice System Administration Guide 204
B
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SIP Timer Values (sec) section
RFC 2543 Call Hold If set to yes, unit will include c=0.0.0.0 syntax in SDP when
sending a SIP re-INVITE to the peer to hold the call. If set to
no, unit will not include the c=0.0.0.0 syntax in the SDP. The
unit will always include a=sendonly syntax in the SDP in
either case.
Default: yes
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: yes
SIP TCP Port Min The lowest TCP port number that can be used for SIP
sessions.
Default: 5060
SIP TCP Port Max The highest TCP port number that can be used for SIP
sessions.
Default: 5080
SIP T1 RFC 3261 T1 value (RTT estimate), which can range from 0 to
64 seconds.
Default: .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: 4
SIP T4 RFC 3261 T4 value (maximum duration a message remains in
the network), which can range from 0 to 64 seconds.
Default: 5
SIP Timer B RFC 3261 INVITE transaction time-out value, which can range
from 0 to 64 seconds.
Default: 32
SIP Timer F RFC 3261 Non-INVITE transaction time-out value, which can
range from 0 to 64 seconds.
Default: 32