flexfax: Hyafax-Client-Server-Protocol

[Christoph Scheeder <christoph.scheeder@scheeder.de>]

Hi, 
im new on this list, so please excuse me if i ask some questions which already have been answerd.
i have two problems.
first:
i have a USR-Sportster Message-plus modem, attached to ISDN over a so-called a/b-adapter and i get the strange behavior, that i can receive faxes without any problems, but when i try to send one i get a message telling "no dialtone" and the modem hangs up immediatley. if i use a terminal program to dial out in data-mode all works fine.
system is a debian 1.3 linux, kernel 2.2.0.
can anyone tell me what is going on ?
second problem is where can i get exact information about the parameters and the answers used in the client-server protocol used by hfaxd ?
The manpage only tells something about which commands are supported, but does not say anything about their parameters.
thanks and have a nice day
	christoph scheeder