18c2ecf20Sopenharmony_ci# SPDX-License-Identifier: GPL-2.0-only 28c2ecf20Sopenharmony_ciconfig ECHO 38c2ecf20Sopenharmony_ci tristate "Line Echo Canceller support" 48c2ecf20Sopenharmony_ci help 58c2ecf20Sopenharmony_ci This driver provides line echo cancelling support for mISDN and 68c2ecf20Sopenharmony_ci Zaptel drivers. 78c2ecf20Sopenharmony_ci 88c2ecf20Sopenharmony_ci To compile this driver as a module, choose M here. The module 98c2ecf20Sopenharmony_ci will be called echo. 10