--- a/ater/main.c	Mon Jun 24 04:01:38 2024 +0000
+++ b/ater/main.c	Mon Jun 24 07:19:38 2024 +0000
@@ -11,19 +11,24 @@
 #include <stdbool.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 #include <unistd.h>
 
 #include <osmocom/core/talloc.h>
 #include <osmocom/core/select.h>
 #include <osmocom/core/application.h>
 #include <osmocom/e1d/proto_clnt.h>
+#include <osmocom/isdn/i460_mux.h>
 
 #include "../libutil/open_ts.h"
 #include "../libutil/stdin_handler.h"
 #include "globals.h"
+#include "submux.h"
 
 struct osmo_e1dp_client *g_client;
 int ts_fd;
+struct osmo_i460_timeslot i460_ts;
+struct ater_subslot subslots[ATER_SUBSLOTS];
 
 static const char *e1d_socket_path = E1DP_DEFAULT_SOCKET;
 static const char *timeslot_spec;
@@ -53,6 +58,27 @@
 	timeslot_spec = argv[optind];
 }
 
+static void register_subslots(void)
+{
+	int nr;
+	struct osmo_i460_schan_desc chd;
+
+	memset(&chd, 0, sizeof chd);
+	chd.rate = OSMO_I460_RATE_16k;
+	chd.demux.num_bits = 320;
+	chd.demux.out_cb_bits = i460_rx_func;
+
+	for (nr = 0; nr < ATER_SUBSLOTS; nr++) {
+		subslots[nr].nr = nr;
+		chd.demux.user_data = subslots + nr;
+		chd.mux.user_data = subslots + nr;
+		subslots[nr].schan =
+				osmo_i460_subchan_add(g_ctx, &i460_ts, &chd);
+		OSMO_ASSERT(subslots[nr].schan);
+		chd.bit_offset += 2;
+	}
+}
+
 int main(int argc, char **argv)
 {
 	process_cmdline(argc, argv);
@@ -68,6 +94,9 @@
 	}
 	ts_fd = open_e1d_ts(g_client, timeslot_spec);
 
+	osmo_i460_ts_init(&i460_ts);
+	register_subslots();
+
 	osmo_fd_setup(&ts_ofd, ts_fd, OSMO_FD_READ, ts_fd_cb, NULL, 0);
 	OSMO_ASSERT(osmo_fd_register(&ts_ofd) == 0);