[Asterisk-Users] 2 questions about ISDN BRI

[Tomica Crnek]

1st question
------------
I am able to receive calls to Asterisk via BRI, but when I attempt to
dial out from Asterisk to ISDN I always get
 
    -- Executing Dial("SIP/1001-3fb0", "Modem/g1:6658218") in new stack
    -- Called g1:6658218
    -- Modem[i4l]/ttyI1 is busy
    -- Hungup 'Modem[i4l]/ttyI1'
 

2nd question
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Is it possible to emulate ISDN NT device with Asterisk and connect other
ISDN devices directly to Asterisk? If it is, what do I have to do to
switch Asterisk behavior to NT.
 
 
thanks
Tomica