Yealink SIP-T38G, Administrator'S Manual

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Appendix
259
Range
0-Disabled
1-Enabled
Example sip.use_out_bound_in_dialog = 0
Parameter-
account.x.advanced.timer_t1
Configuration File
<MAC>.cfg
Description
Configures the SIP session timer T1 (in
seconds) for account X.
T1 is an estimate of the Round Trip Time (RTT)
of transactions between a SIP client and SIP
server.
X ranges from 1 to 6.
Format Float
Default Value 0.5
Example account.1.advanced.timer_t1 = 1
Parameter-
account.x.advanced.timer_t2
Configuration File
<MAC>.cfg
Description
Configures the session timer T2 (in seconds)
for account X.
T2 represents the maximum retransmitting
time of any SIP request message. The
re-transmitting and doubling of T1 continues
until the retransmitting time reaches the T2
value.
X ranges from 1 to 6.
Format Float
Default Value 4
Example account.1.advanced.timer_t2 = 5
Parameter-
account.x.advanced.timer_t4
Configuration File
<MAC>.cfg
Description Configures the session timer of T4 (in