Yealink SIP-T38G

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