IWIC(4) BSD Kernel Interfaces Manual IWIC(4)NAME
iwic -- isdn4bsd Winbond ISDN Chip device driver
SYNOPSIS
iwic* at pci?
DESCRIPTION
The iwic driver provides D-channel layer 1 support as specified in ITU Recommendation I.430 and layer 1 support for the B-channel.
The driver supports passive PCI ISDN cards from various manufacturers based on the Winbond W6692 chip.
SUPPORTED CARDS
ASUSCOM P-IN100-ST-D
Dynalink IS64PPH
SEE ALSO isdnd(8)STANDARDS
CCITT Recommendation I.430
AUTHORS
The iwic driver was written by Dave Boyce <dave@abyss.demon.co.uk>.
This manpage was written by Hellmuth Michaelis <hm@freebsd.org>.
CAVEATS
The driver is still in a somewhat experimental state.
BUGS
Layer 1 persistent deactivation not yet implemented.
BSD September 25, 2002 BSD
Check Out this Related Man Page
ISDNTEL(4) BSD Kernel Interfaces Manual ISDNTEL(4)NAME
isdntel -- ISDN B-channel telephony interface driver
SYNOPSIS
pseudo-device isdntel count
DESCRIPTION
The isdntel driver provides an interface to the B-channel for telephony applications and is currently used by the isdnd(8) for answering
machine support. The driver is part of the isdn4bsd package.
The lower six bits of the driver's minor number are used to specify a unit number, whereas the upper two bits specify a functionality.
Functionality zero is the usual telephony data stream i/o driver.
Functionality one is used to enable commands to dial out and hang up and receive responses about the state of the dial out progress and sta-
tus. This commands may change in the future, for details see the file /usr/include/netisdn/i4b_tel_ioctl.h and the isdntel(8) utility.
The telephony data stream comes out of the line in a bit-reversed format, so the isdntel 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(8) utility.
The driver is able to process several ioctl's:
I4B_TEL_GETAUDIOFMT
get currently used audio format conversion.
I4B_TEL_SETAUDIOFMT
set currently used audio format conversion.
I4B_TEL_EMPTYINPUTQUEUE
clear the input queue.
For the I4B_TEL_GETAUDIOFMT and I4B_TEL_SETAUDIOFMT, the following parameters are available:
CVT_NONE
do no A-law/mu-law audio format conversion. The conversion path looks like this:
USER <--> bitreversing <--> ISDN-line
CVT_ALAW2ULAW
set audio format conversion to do an audio conversion from A-law (on the ISDN line) to mu-law (in the userland). The read(2)
conversion path looks like this:
USER <-- mu-law/A-law <-- bitreversing <-- ISDN-line
and the write(2) conversion path looks like this:
USER --> mu-law/A-law --> bitreversing --> ISDN-line
CVT_ULAW2ALAW
set audio format conversion to do an audio conversion from mu-law (on the ISDN line) to A-law (in the userland). The read(2)
conversion path looks like this:
USER <-- A-law/mu-law <-- bitreversing <-- ISDN-line
and the write(2) conversion path looks like this:
USER --> A-law/mu-law --> bitreversing --> ISDN-line
SEE ALSO isdnd.rc(5), isdnd(8), isdntel(8), isdntelctl(8)STANDARDS
A-law and mu-law are specified in ITU Recommendation G.711.
AUTHORS
The isdntel device driver and this man page were written by Hellmuth Michaelis <hm@kts.org>.
BSD April 21, 1999 BSD
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