default MSN

[Juergen Lock]

Hi!  I'm having trouble dialing out on a pbx where the msn is unknown
(userland ppp, FreeBSD 5.2.1), as expected (isdntrace) i get

Q931: pd=Q.931/I.451, cr=0x2a (from destination), message=RELEASE COMPLETE: 
     [cause: 1: Unallocated (unassigned) number (Q.850) 
          (location=private network serving local user, std=CCITT)]

 An existing Win98 box dials out on the same line without problems but
a quick look on it didnt reveal a msn (avm fritzcard, no msn setting
in the menus...)

 On the previous installation (office has moved) suse linux 8.1
was able to dial out with a `msn' of 0 (1&1 usb device using a patched
fritz x usb driver called fxusb_CZ), but trying that with i4b
(passive isa avm a1) doesnt work with the above result.  Now the
question for the isdn gurus: is this (accepting 0 as meaning
`use default msn') a feature of the pbx (which may have changed
with the move) or of linux' isdn stack, and if the latter, what has
to be done to add this feature to i4b?  I know nothing about the
isdn protocol details so sorry if this is a stupid question...

 Thanx and greetings,
	Juergen