patch-2.3.14 linux/Documentation/isdn/README.hfc-pci

• Lines: 27
• Date: Thu Aug 12 09:42:33 1999
• Orig file: v2.3.13/linux/Documentation/isdn/README.hfc-pci
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.3.13/linux/Documentation/isdn/README.hfc-pci linux/Documentation/isdn/README.hfc-pci
@@ -0,0 +1,26 @@
+The driver for the HFC-PCI and HFC-PCI-A chips from CCD may be used
+for many OEM cards using this chips.
+Additionally the driver has a special feature which makes it possible
+to read the echo-channel of the isdn bus. So all frames in both directions
+may be logged.
+When the echo logging feature is used the number of available B-channels
+for a HFC-PCI card is reduced to 1. Of course this is only relevant to
+the card, not to the isdn line.
+To activate the echo mode the following ioctls must be entered:
+
+hisaxctrl <driver/cardname> 10 1
+
+This reduces the available channels to 1. There must not be open connections
+through this card when entering the command.
+And then:
+
+hisaxctrl <driver/cardname> 12 1
+
+This enables the echo mode. If Hex logging is activated the isdnctrlx 
+devices show a output with a line beginning of HEX: for the providers
+exchange and ECHO: for isdn devices sending to the provider.
+
+Comments and reports to werner@isdn4linux.de or werner@titro.de .
+
+
+