default or selected kernelversion does not have config value CONFIG_ISDN_PPP_VJ.
Result is shown for kernelversion 6.9.9
Use VJ-compression with synchronous PPP
configname: CONFIG_ISDN_PPP_VJ
Linux Kernel Configuration
└─>Device Drivers
└─>ISDN support
└─>Old ISDN4Linux (deprecated)
└─>Use VJ-compression with synchronous PPP
In linux kernel since version 2.6.20 (release Date: 2007-02-04)
This enables Van Jacobson header compression for synchronous PPP.
Say Y if the other end of the connection supports it.
Say Y if the other end of the connection supports it.