Have you tried disabling cache period by putting a zero there. Also try putting a zero at dns cache. This idea is excellent, but unfortunately it doesn't work. The problem is not that the address is refreshed too late but it is not refreshed at all. Unfortunately the old support was stopped, and I ...

1. OnDO SIP Server/OnDO PBX version: Brekeke PBX, Version 2.1.5.6 , Pro ID: 00000001 , Users: 100 , Concurrent: 100 2. Java version: 1.6.0_03 3. OS type and the version: MS XP Prof (2002 ver.) with SP2 4. UA (phone), gateway or other hardware/software involved: Linksys SPA-3000 Grandstream-488 ...