Please help me mr...

i have read this module...but i don't understand with 4 question :

1. I found that in the SMS Module (SIP to GSM) don't explained the software which used by the client/user agent or where we should to do testing in client?

2. I wanna know the other facilities should be used, beside openser-1.0.0.tar.gz,mysql,DNS?

3. For the final result, is this module could send SMS by 2 directions?

4. Could you please the step to do the testing?

Thank's for all