[Asterisk-Users] Get no busy signal on my analog line

[kibeki at gmx.net]

Hi,

we use a Grandstream HandyTone 386 analog adapter.

At port one there is a fax machine connected. If the fax is connected to a 
remote fax machine a second incoming call does not get a busy signal.

Does this belong to my dialplan or my sip registration settings?

Thanks and Regards,
Bernd