PLANET VIP-156PE - Manual (Page 45)

SIP Analog Telephone Adapter
45
Field Description
SIP Expire Time To set up the registration interval time.
SIP Expire Time
Type
Default is General; Register interval time setting. Provide items like
General (standard), 1/2, 2/3, 3/4, 4/5, 5/6, 6/7, 7/8, 8/9, 9/10。
Register server need supports this function
Register time calculated
General: expiry time-[(expiry time/30)*6], when Expiry Time>60 it will
start to work, if less than 60 seconds, it will decrease 5 seconds.
1/2: expiry time * 1/2.
2/3: expiry time * 2/3.
3/4: expiry time * 3/4.
4/5: expiry time * 4/5.