ISDN(4) BSD Programmer's Manual ISDN(4)NAMEisdn - ISDN kernel to userland master device
SYNOPSIS
pseudo-device isdnDESCRIPTION
The isdn device driver is used by the isdnd(8) daemon to exchange mes-
sages with the ISDN kernel part for the purpose of call establishment,
control and disconnection and to access various control and status infor-
mations.
The messages and message parameters are documented in the include file
/usr/include/netisdn/i4b_ioctl.h.
The available ioctl's are:
I4B_CDID_REQ
Request a unique Call Description IDentifier (cdid) which
identifies uniquely a single interaction of the local D
channel with the exchange.
I4B_CONNECT_REQ
Actively request a call setup to a remote ISDN subscriber.
I4B_CONNECT_RESP
Respond to an incoming call, either accept, reject or ig-
nore it.
I4B_DISCONNECT_REQ
Actively terminate a connection.
I4B_CTRL_INFO_REQ
Request information about an installed ISDN controller
card.
I4B_DIALOUT_RESP
Give information about call setup to driver who requested
dialing out.
I4B_TIMEOUT_UPD
Update the kernels timeout value(s) in case of dynamically
calculated shorthold mode timing changes.
I4B_UPDOWN_IND
Inform the kernel userland drivers about interface soft
up/down status changes.
I4B_CTRL_DOWNLOAD
Download firmware to active card(s).
I4B_ACTIVE_DIAGNOSTIC
Return diagnostic information from active cards.
Status and event messages available from the kernel are:
MSG_CONNECT_IND
An incoming call from a remote ISDN user is indicated.
MSG_CONNECT_ACTIVE_IND
After an incoming call has been accepted locally or an out-
going call has been accepted by a remote, the exchange sig-
naled an active connection and the corresponding B-channel
is switched through.
MSG_DISCONNECT_IND
A call was terminated.
MSG_DIALOUT_IND
A userland interface driver requests the daemon to dial out
(typically a network interface when a packet arrives in its
send queue).
MSG_IDLE_TIMEOUT_IND
A call was terminated by the isdn4bsd kernel driver because
a B-channel idle timeout occurred.
MSG_ACCT_IND
Accounting information from a network driver.
MSG_CHARGING_IND
Charging information from the kernel.
SEE ALSOisdnd(8)BUGS
The isdn devices in /dev must be created using MAKEDEV(8) first on MirOS.
This is a hommage to the original author of ISDN4BSD, who requests a
postcard being sent to him by every user of this software.
AUTHORS
The isdn device driver and this man page were written by Hellmuth
Michaelis <hm@kts.org>.
MirOS BSD #10-current February 3, 1998 1
