[Asterisk-Users] congestion problem with only one number

[Eric Wieling]

> Even without any options I get the same result:
> -- Executing Dial("SCCP/michiel-0000000b", "Modem/g1:xxxxxxxxxx|50") in new stack
> -- Modem[i4l]/ttyI3 is busy
> -- Hungup 'Modem[i4l]/ttyI3'
> == Everyone is busy/congested at this time
> 
> When I call my cell the second after that all works fine.
> The 2 ISDN lines are only connected to the * box, so no
> other hardware can claim the line.

That is specific to I4L and I can't help with that, other than to 
point out that not many people use I4L with Asterisk.  They susually 
use CAPI or ZapBRI drivers.