i have setup my asterisk on debian sarge. At the moment there are 3 SIP-Clients which can speak to each other and can dial out through chan_capi. The Capi device is a AVM Fritzcard Classic (isa). I have downloaded and build the fcclassic.o Module and it works.
But the problem is, after some time, no one can call the Server through ISDN. Sometimes, the sip-phones can call out, and sometimes not. Then, the server tells:
Capi device for ISDN1 not found.
unable to create channel.
when i restart asterisk, it works again.
Could it be, that Linux puts the card into standby or so after some time of inactivity?