NAME
isdn
- ISDN kernel to userland master device
SYNOPSIS
pseudo-device isdn
DESCRIPTION
The
isdn
device driver is used by the
isdnd(8)
daemon to exchange messages with the ISDN kernel part for the purpose
of call establishment, control and disconnection and to access various
control and status informations.
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 ignore 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 outgoing call has
been accepted by a remote, the exchange signaled 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 ALSO
isdnd(8)
AUTHORS
The
isdn
device driver and this man page were written by
Hellmuth Michaelis <hm@kts.org>
.