Non exclusive sound device access!!

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LEARN ABOUT NETBSD

isdntelctl

ISDNTELCTL(8)						    BSD System Manager's Manual 					     ISDNTELCTL(8)

NAME

     isdntelctl -- control isdn4bsd telephone sound format conversion

SYNOPSIS

     isdntelctl [-c] [-g] [-u unit] [-A] [-U] [-N]

DESCRIPTION

     isdntelctl is part of the isdn4bsd package and is used to configure the sound format conversion facilities of the /dev/isdntel interfaces.

     The following options are available:

     -c      Clear the telephone input queue.

     -g      Get the sound format currently in use.

     -u      Set the /dev/isdntel unit number.	The default value is zero to access device /dev/isdntel0.

     -A      Do A-law (ISDN line) -> mu-law (userland) conversion.

     -U      Do mu-law (ISDN line) -> A-law (userland) conversion.

     -N      Set sound conversion to do no format conversion.

     The telephony data stream comes out of the line in a bit-reversed format, so the isdntel(4) driver does the bit-reversion process in any
     case.

     Additionally, the user can specify to do A-law to mu-law, mu-law to A-law or no conversion at all in the isdntel driver by using the
     isdntelctl utility.

FILES

     /dev/isdntel<n>

EXAMPLES

     The command

	   isdntelctl -g

     displays the currently used sound format for device /dev/isdntel0.

SEE ALSO

     isdntel(4), isdnd.rc(5), isdnd(8)

STANDARDS

     A-law and mu-law are specified in ITU Recommendation G.711.

AUTHORS

     The isdntelctl utility and this man page were written by Hellmuth Michaelis <hm@kts.org>.

BSD
								  April 21, 1999							       BSD

Linux