stream_id         149 mod_freetdm/mod_freetdm.c static switch_status_t channel_read_frame(switch_core_session_t *session, switch_frame_t **frame, switch_io_flag_t flags, int stream_id);
stream_id         150 mod_freetdm/mod_freetdm.c static switch_status_t channel_write_frame(switch_core_session_t *session, switch_frame_t *frame, switch_io_flag_t flags, int stream_id);
stream_id         604 mod_freetdm/mod_freetdm.c static switch_status_t channel_read_frame(switch_core_session_t *session, switch_frame_t **frame, switch_io_flag_t flags, int stream_id)
stream_id         719 mod_freetdm/mod_freetdm.c static switch_status_t channel_write_frame(switch_core_session_t *session, switch_frame_t *frame, switch_io_flag_t flags, int stream_id)