default or selected kernelversion does not have config value CONFIG_CAPI_EICON.
Result is shown for kernelversion 6.9.9
Active Eicon DIVA Server cards
configname: CONFIG_CAPI_EICON
Linux Kernel Configuration
└─>Device Drivers
└─>ISDN support
└─>CAPI 2.0 subsystem
└─>Active Eicon DIVA Server cards
In linux kernel since version 2.6.20 (release Date: 2007-02-04)
Enable support for Eicon Networks active ISDN cards.