4.5.1.11 Timer Settings

T1 Timer

Description Selects the default interval, in milliseconds, between transmissions of
SIP messages. For details, refer to RFC 3261.
Value Range •250
•500
•1000
•2000
•4000
Default Value 500
Configuration File Reference SIP_TIMER_T1 (Page 304)

T2 Timer

Description Selects the maximum interval, in seconds, between transmissions of
SIP messages. For details, refer to RFC 3261.
Value Range •2
•4
•8
•16
•32
Default Value 4
Configuration File Reference SIP_TIMER_T2 (Page 304)

Timer B (milliseconds)

Description Specifies the value of SIP timer B (INVITE transaction timeout timer),
in milliseconds. For details, refer to RFC 3261.
Value Range 250–64000
Default Value 32000
Configuration File Reference SIP_TIMER_B (Page 311)

Timer D (milliseconds)

Description Specifies the value of SIP timer D (wait time for answer resending), in
milliseconds. For details, refer to RFC 3261.
Value Range 0, 250–64000
Default Value 5000
Configuration File Reference SIP_TIMER_D (Page 312)
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