Welltech LP-803 v.3.07 - Manual (Page 57)

LAN Phone 803
User Manual
Welltech Technology Co., Ltd.
57 / 90 2014/07/22
2.8.3.2. Instruction
Item Explanation
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 LP803 fails to