asterisk users - May 2004 - AVM Fritz doesn't pick up call or make calls

Hi,

I have an AVM Fritz! ISDN card connected to an NT1 unit (Australian).

I have no problems getting the drivers up and running but when using it with
asterisk nothing happens.

I call in using a mobile or analogue phone on either of the numbers and the
NT1 activity light either flashes or goes solid while ringing but it pauses
for a while and on a mobile i get call not answered and a busy signal on
analogue phone.

Calling out gives:

     -- Accepting AUTHENTICATED call from 192.168.0.243, requested format 14,
actual format = 14
    -- Executing Dial("IAX2[kimble@kimble]/1",
"CAPI/0294170944:0404880304")
in new stack
    -- data = 0294170944:0404880304
    -- capi request omsn = 0294170944
  == found capi with omsn = 0294170944
  == CAPI Call CAPI[contr1/0294170944]/0     -- creating pipe for PLCI=-1
    -- Called 0294170944:0404880304
    -- CONNECT_CONF ID=002 #0x0004 LEN=0014
  Controller/PLCI/NCCI            = 0x101
  Info                            = 0x0

  == received CONNECT_CONF PLCI = 0x101 INFO = 0


Using an IAX soft phone. The softphone just rings and rings. After hanging
up I get.

   -- CAPI Hangingup
       > activehangingup
    -- DISCONNECT_CONF ID=002 #0x0005 LEN=0014
  Controller/PLCI/NCCI            = 0x101
  Info                            = 0x0

My question is - does this look like a software or a hardware error? I'd
just like to mention capi4-hylafax sendfax app just hangs.

I believe with the NT1 i might need a terminating resistor. Does anyone know
if the fritz cards provide an SBUS termination and if they do is there a way
of turning it on?

Thanks in advance for all the help.