thank you, I can roll back to the firmware you recommended and all work fine.
I have another question, I want to have the following scenario to work:
1. If the first 3 number I dial is 011 which means I am dialing international call, I want OBI200 to use SP1 automatically.
2. all other calls will use BT1 automatically i.e. through my local cellphone.
How to configure it?