Sip Timer Values (Sec) Section - Linksys RTP300 - Broadband Router With 2 Phone Ports Administration Manual

Remove Last Reg Lets you remove the last registration before registering a new one if the
value is different. Select yes or no from the drop-down menu.
The default is no.
Use Compact Header Lets you use compact SIP headers in outbound SIP messages. Select yes or
no from the drop-down menu. If set to yes, the ATA device uses compact SIP
headers in outbound SIP messages. If set to no, the ATA device uses normal
SIP headers. If inbound SIP requests contain compact headers, ATA device
reuses the same compact headers when generating the response regardless
the settings of the Use Compact Header parameter. If inbound SIP requests
contain normal headers, ATA device substitutes those headers with compact
headers (if defined by RFC 261) if Use Compact Header parameter is set to yes.
The default is no.
Escape Display Name Lets you keep the Display Name private. Select yes if you want the ATA
device to enclose the string (configured in the Display Name) in a pair of
double quotes for outbound SIP messages. Any occurrences of or \ in the
string is escaped with \ and \\ inside the pair of double quotes. Otherwise,
select no.
The default is no.
RFC 2543 Call Hold Configures the type of call hold: a:sendonly or 0.0.0.0.
The default is no; do not use the 0.0.0.0 syntax in a HOLD SDP; use the
a:sendonly syntax.
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.
The default is yes.
SIP TCP Port Min Specifies the lowest TCP port number that can be used for SIP sessions. This
field is not found in the PAP2T.
SIP TCP Port Max Specifies the highest TCP port number that can be used for SIP sessions. This
field is not found in the PAP2T.
Voice tab > SIP page >

SIP Timer Values (sec) section

Field Description
SIP T1 RFC 3261 T1 value (RTT estimate), which can range from 0 to 64 seconds.
The default is.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.
The default is 4.
SIP T4 RFC 3261 T4 value (maximum duration a message remains in the network),
which can range from 0 to 64 seconds.
The default is 5.
SIP Timer B INVITE time-out value, which can range from 0 to 64 seconds.
The default is 32.
SIP Timer F Non-INVITE time-out value, which can range from 0 to 64 seconds.
The default is 32.
Linksys ATA Administration Guide
SIP page
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