Hi
thanks for your reply...but for SIP built in N900 there are different options. the fields sre bit different than what it mentioned on Jumblo Website. The fields mentioned are:

1. Address : sip.address@example.com (just an example as shown
2. password:
3. Use for telephone numbers Checkbox
4. outbound proxy
5. port : 5060 (this is ok)

Please advice what to fil in the above cloumns