# SPDX-License-Identifier: GPL-2.0-only config BT_CMTP tristate "CMTP protocol support" depends on BT_BREDR && ISDN_CAPI help CMTP (CAPI Message Transport Protocol) is a transport layer for CAPI messages. CMTP is required for the Bluetooth Common ISDN Access Profile. Say Y here to compile CMTP support into the kernel or say M to compile it as module (cmtp).