SIP T1: 60
SIP T2: 64

SIP Timer F: 64
Reg Retry Intvl: 56



i tried this .. works great..

Thanks to boatman


also i downgraded firmware from 1.011 to 1.008
Because linksys wag325n have problem with ATA.
(only outgoing calls disconnects after few seconds or minute)


Now everything working perfect.