CONFIG_MISDN_IPAC (not configurable)

modulename: mISDNipac.ko

configname: CONFIG_MISDN_IPAC

Linux Kernel Configuration
└─>Device Drivers
└─>ISDN support
└─>Modular ISDN driver
└─>MISDN_IPAC
In linux kernel since version 2.6.32 (release Date: 2009-12-02)  
source code:
drivers/isdn/hardware/mISDN/mISDNipac.c