24. Dialin

24.1 I keep getting the message "isdn_tty: call from XXX - YYY ignored". Why does isdn4linux (syncPPP) ignore this dialin attempt?

There are two possible explanations. Either your own MSN (here: YYY) is not correctly set with "isdnctrl eaz interface YYY". Or "isdnctrl secure interface on" was set, without allowing calls from the incoming number (here: XXX) with "isdnctrl addphone interface in XXX".

24.2 With "isdnctl pppbind" I've established an exclusive connection. But this is removed with an incoming call.

G. Richter richter@ecos.de wrote to Michael Hipp Michael.Hipp@student.uni-tuebingen.de on 2 Nov 1996:

... I've looked through the code an found a possible error triggered by incoming calls. Is this the case for your scenario? If so, try removing: (isdn_net.c, around line 1730) p-local.pppbind = -1; in the function isdn_net_find_icall(). I took out this line and now it works.

24.3 A SunISDN tries to dial into my i4l system.

The Sun tries to communicate with asyncPPP. ipppd can't handle this, you have to use the ttyI* devices and the standard pppd.