Configuring Dahdi for Data + Voice Channels


Currently I’m working on TAP and in near time I will try to integrate with asterisk. But before that, I’m facing a problem i.e. how can I configure dahdi for both data and voice channels? Because I want to send the message to pager(TAP). When I try to run a soft pager (paging application) using dahdi as device channel I often get an error “cannot open /dev/dahdi/1: Device or resource busy”. Plz do help me out on this problem.

Further added, I’m using T1 on my box.