Welltech WellGate M1 - Manual (Page 33)

WellGate M1 Web user guide
Welltech Technology Co., Ltd.
33 / 58 2014/12/1
Item Description
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.
*This function must be supported by Server.
For example, if T1 is 500 ms, T2 is 4 seconds and B,F,H is 32
seconds, then non-INVITE retransmissions occur at intervals of
500 ms, 1s, 2s, 4s, 4s, 4s, 4s, 4s, 4s, 4s. This means that
retransmissions occur with an exponentially increasing interval
that caps at T2. In this particular scenario, there are 10
retransmissions which is a total of 11 requests from UAC.
SIP INVITE
Timeout Default: 30000 ms; Set up SIP Invite, If how long do not
respond, enter the failed state. This column can only enter
numbers; maximum length is 5 bytes with the range of
8000~64000.
Local SIP Port Default: 5060~5060.
Set up the Start and End SIP Port Range of phone 1.