VOIP to GSM Channel Bank Configuration


I would like some help in configuring an asterisk box to terminate VOIP calls onto a teles gsm channel bank. The route is as follows: -

VOIP —> Router (with E1 interface) --> Asterisk (with TD405P) --> GSM Channel bank (E1) interface.

BTW communication is done using H323, what do I need to have this solution running? anyone in the list been involved in a similar setup before? Need urgent assistance thanks

Kiania D.