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isdntelctl(8) [netbsd man page]

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

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 <>. BSD
April 21, 1999 BSD

Check Out this Related Man Page

mlib_SignalALaw2uLaw(3MLIB)				    mediaLib Library Functions				       mlib_SignalALaw2uLaw(3MLIB)

mlib_SignalALaw2uLaw - ITU G.711 m-law and A-law compression and decompression SYNOPSIS
cc [ flag... ] file... -lmlib [ library... ] #include <mlib.h> mlib_status mlib_SignalALaw2uLaw(mlib_u8 *ucode, const mlib_u8 *acode, mlib_s32 n); DESCRIPTION
The mlib_SignalALaw2uLaw() function performs ITU G.711 m-law and A-law compression and decompression in compliance with the ITU (Former CCITT) G.711 specification. PARAMETERS
The function takes the following arguments: ucode m-law code array. acode A-law code array. n Number of samples in the source array. RETURN VALUES
The function returns MLIB_SUCCESS if successful. Otherwise it returns MLIB_FAILURE. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Evolving | +-----------------------------+-----------------------------+ |MT-Level |MT-Safe | +-----------------------------+-----------------------------+ SEE ALSO
mlib_SignalALaw2Linear(3MLIB), mlib_SignalLinear2ALaw(3MLIB), mlib_SignalLinear2uLaw(3MLIB), mlib_SignaluLaw2ALaw(3MLIB), mlib_Signalu- Law2Linear(3MLIB), attributes(5) SunOS 5.10 9 Nov 2004 mlib_SignalALaw2uLaw(3MLIB)
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