default or selected kernelversion does not have config value CONFIG_ISDN_DRV_HISAX.
Result is shown for kernelversion 6.9.9
HiSax SiemensChipSet driver support
modulename: hisax.ko
configname: CONFIG_ISDN_DRV_HISAX
Linux Kernel Configuration
└─>Device Drivers
└─>ISDN support
└─>Old ISDN4Linux (deprecated)
└─>Passive cards
└─>HiSax SiemensChipSet driver support
In linux kernel since version 2.6.20 (release Date: 2007-02-04)
This is a driver supporting the Siemens chipset on various
ISDN-cards (like AVM A1, Elsa ISDN cards, Teles S0-16.0, Teles
S0-16.3, Teles S0-8, Teles/Creatix PnP, ITK micro ix1 and many
compatibles).
HiSax is just the name of this driver, not the name of any hardware.
If you have a card with such a chipset, you should say Y here and
also to the configuration option of the driver for your particular
card, below.
ISDN-cards (like AVM A1, Elsa ISDN cards, Teles S0-16.0, Teles
S0-16.3, Teles S0-8, Teles/Creatix PnP, ITK micro ix1 and many
compatibles).
HiSax is just the name of this driver, not the name of any hardware.
If you have a card with such a chipset, you should say Y here and
also to the configuration option of the driver for your particular
card, below.