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NetBSD 6.1.5 - man page for isdntelctl (netbsd section 8)

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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 conver-
     sion 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
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