patch-1.3.69 linux/Documentation/isdn/README.syncppp

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diff -u --recursive --new-file v1.3.68/linux/Documentation/isdn/README.syncppp linux/Documentation/isdn/README.syncppp
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+Some additional information for setting up a syncPPP
+connection using network interfaces.
+---------------------------------------------------------------
+
+You need one thing beside the isdn4linux package:
+
+  a patched pppd .. (I called it ipppd to show the difference)
+
+Compiling isdn4linux with sync PPP:
+-----------------------------------
+To compile isdn4linux with the sync PPP part, you have
+to answer the apropriate question when doing a "make config"
+Don't forget to load the slhc.o
+module before the isdn.o module, if VJ-compression support
+is not compiled into your kernel. 
+
+Using isdn4linux with sync PPP:
+-------------------------------
+Sync PPP is just another encapsulation for isdn4linux. The
+name to enable sync PPP encapsualtion is 'syncppp' .. e.g:
+
+  isdn/isdnctrl encap ippp0 syncppp
+
+The name of the interface is here 'ippp0'. You need 
+one interface with the name 'ippp0' to saturate the
+ipppd, which checks the ppp version via this interface.
+
+To set up a PPP connection you need the ipppd .. You must start 
+the ipppd once after installing the modules. The ipppd 
+communicates with the isdn4linux link-level driver using the
+/dev/ippp0 to /dev/ippp15 devices. One ipppd can handle
+all devices at once. If you want to use two PPP connections
+at the same time, you have to connect the ipppd to two
+devices .. and so on. 
+I've implemented one additonal option for the ipppd:
+ 'useifip' will get (if set to not 0.0.0.0) the IP address 
+ for the negotiation from the attached network-interface. 
+You must disable BSD-compression, this implementation can't
+handle compressed packets.
+
+Check the rc.isdn.syncppp file for an example setup script.
+
+enjoy it,
+    michael
+     
+
+PS: I also implemented generic MP (RFC 1717). But in the 
+current isdn4linux link-level driver there is no 
+(or better say: another) way of doing channel bundling. So,
+don't call the ipppd with the `+mp` option to enable 
+MP negotiation.
+

FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen, slshen@lbl.gov with Sam's (original) version
of this