WELLTECH ATA-172 - Page 65

ATA Web user guide
65 / 114 2015/1/8
Item Description
SIP Expire Time Default is 60; When this function is Set up to 0, the SIP Expire
Time is according to the default value of Server.
This column can only be numbers; maximum length is 5 bytes
with the range of 60~86400 (seconds).
SIP Expire Time
Type
Default: General.
Provide options: General, 1/2, 2/3, 3/4, 4/5, 5/6, 6/7, 7/8, 8/9,
9/10.
*This function must be supported by SIP Server or IP-PBX
Server.
The count formula of SIP Expire Time:
General: SIP Expire Time-[(SIP Expire Time/30)*6] as SIP
Expire Time > 60 seconds, if SIP Expire Time < 60 seconds, the
SIP Expire Time subtract 5 seconds uniformly.
1/2: SIP Expire Time * 1/2.
2/3: SIP Expire Time * 2/3.
3/4: SIP Expire Time * 3/4.
4/5: SIP Expire Time * 4/5.
5/6: SIP Expire Time * 5/6.
6/7: SIP Expire Time * 6/7.
7/8: SIP Expire Time * 7/8.
8/9: SIP Expire Time * 8/9.
9/10: SIP Expire Time * 9/10.
SIP Registration
Retry Timer
Default: 64 seconds.
Set up the period of registering SIP Server again if LP399 fails to
register SIP Server or IP-PBX server.
This column can only enter numbers; maximum length is 4 bytes
with the range of 5~3600 (seconds).
SIP Session
Timer T1
Default: 1000 ms; Set up round-trip time (RTP) estimate.
This column can only enter numbers; maximum length is 4 bytes
with the range of 500~2000.
*This function must be supported by Server.
SIP Session
Timer T2
Default: 8000 ms.
Set up the maximum retransmit interval for non-INVITE
requests and INVITE responses.
This column can only enter numbers; maximum length is 5 bytes
with the range of 4000~16000.
*This function must be supported by Server.
SIP Session
Timer B, F, H
Default: 32000 ms.
Set up the maximum retransmit interval for non-INVITE
requests and INVITE responses.
This column can only enter numbers; maximum length is 6 bytes
with the range of 8000~128000.
B: 64 * SIP T1; INVITE transaction timeout timer。
F: 64 * SIP T1; non-INVITE transaction timeout timer。
H: 64 * SIP T1, Wait time for ACK receipt.