|
T1
|
500 milliseconds
|
17.1.1.1
|
RTT Estimate
|
|
T2
|
4 seconds
|
17.1.2.2
|
Maximum retransmit interval for non-INVITE requests
and INVITE responses
|
|
T4
|
5 seconds
|
17.1.2.2
|
Maximum duration that a message remains in the network
|
|
Timer A
|
T1
|
17.1.1.2
|
INVITE request retransmit interval, for UDP only
|
|
Timber B
|
64*T1
|
17.1.1.2
|
INVITE transaction timeout timer
|
|
Timer C
|
> 3 minutes
|
16.6 (bullet 11)
|
Proxy INVITE transaction timeout
|
|
Timer D
|
> 32 seconds for UDP, 0 for TCP/SCTP
|
17.1.1.2
|
Wait time for response retransmits
|
|
Timer E
|
T1
|
17.1.2.2
|
Non-INVITE request retransmit interval, for UDP only
|
|
Timer F
|
64 * T1
|
17.1.2.2
|
Non-INVITE transaction timeout timer
|
|
Timer G
|
T4 for UDP, 0 for TCP/SCTP
|
17.2.1
|
INVITE response retransmit interval
|
|
Timer H
|
64 * T1
|
17.2.1
|
Wait time for ACK receipt
|
|
Timer I
|
T4 for UDP, 0 for TCP/SCTP
|
17.2.1
|
Wait time for ACK retransmits
|
|
Timer J
|
64 * T1 for UDP, 0 for TCP/SCTP
|
17.2.2
|
Wait time for non-INVITE request retransmits
|
|
Timer K
|
T4 for UDP, 0 for TCP/SCTP
|
17.1.2.2
|
Wait time for response retransmits
|
Download this book in PDF (741 KB)