config DAHDI_ZAPHFC tristate "HFC-S DAHDI Driver" depends on DAHDI && PCI default DAHDI ---help--- This driver provides DAHDI support for various HFC-S single-port ISDN (BRI) cards. To compile this driver as a module, choose M here: the module will be called zaphfc. If unsure, say Y. config ECHO tristate "Line Echo Canceller support" default DAHDI --help-- This driver provides line echo cancelling support for mISDN and DAHDI drivers. To compile this driver as a module, choose M here: the module will be called echo. If unsure, say Y.