Zap channel more then 250

Hello bro,

I need help. Currently i want to install 3 Digium cards in one asterisk server. PRI configuration is 10E1. My problem is that the channels i only can configure from 1 - 250 channels only. Is there away to configure more then that? If yes can you please show me how to do it?

Thanks
Yau

Yep second box.

Ian