diff --git a/apps/app_mixmonitor.c b/apps/app_mixmonitor.c
index 22aedcad0b..f52dee0f4f 100644
--- a/apps/app_mixmonitor.c
+++ b/apps/app_mixmonitor.c
@@ -117,6 +117,11 @@
 						Like with the basic filename argument, if an absolute path isn't given, it will create
 						the file in the configured monitoring directory.</para>
 					</option>
+					<option name="D">
+						<para>Interleave the audio coming from the channel and the audio coming to the channel in
+						the output audio as a dual channel stream, rather than mix it.</para>
+						<note><para>Use .raw as the extension.</para></note>
+					</option>
 					<option name="n">
 						<para>When the <replaceable>r</replaceable> or <replaceable>t</replaceable> option is
 						used, MixMonitor will insert silence into the specified files to maintain
@@ -406,6 +411,7 @@ enum mixmonitor_flags {
 	MUXFLAG_BEEP_STOP = (1 << 13),
 	MUXFLAG_DEPRECATED_RWSYNC = (1 << 14),
 	MUXFLAG_NO_RWSYNC = (1 << 15),
+	MUXFLAG_INTERLEAVED = (1 << 16),
 };
 
 enum mixmonitor_args {
@@ -433,6 +439,7 @@ AST_APP_OPTIONS(mixmonitor_opts, {
 	AST_APP_OPTION_ARG('W', MUXFLAG_VOLUME, OPT_ARG_VOLUME),
 	AST_APP_OPTION_ARG('r', MUXFLAG_READ, OPT_ARG_READNAME),
 	AST_APP_OPTION_ARG('t', MUXFLAG_WRITE, OPT_ARG_WRITENAME),
+	AST_APP_OPTION('D', MUXFLAG_INTERLEAVED),
 	AST_APP_OPTION_ARG('i', MUXFLAG_UID, OPT_ARG_UID),
 	AST_APP_OPTION_ARG('m', MUXFLAG_VMRECIPIENTS, OPT_ARG_VMRECIPIENTS),
 	AST_APP_OPTION_ARG('S', MUXFLAG_DEPRECATED_RWSYNC, OPT_ARG_DEPRECATED_RWSYNC),
@@ -783,6 +790,46 @@ static void *mixmonitor_thread(void *obj)
 				}
 			}
 
+			if (ast_test_flag(mixmonitor, MUXFLAG_INTERLEAVED)) {
+				/* The 'D' option is set, so mix the frame as an interleaved dual channel frame */
+				int i;
+				short read_buf[SAMPLES_PER_FRAME];
+				short write_buf[SAMPLES_PER_FRAME];
+				short stereo_buf[SAMPLES_PER_FRAME * 2];
+				struct ast_frame stereo_frame = {
+					.frametype = AST_FRAME_VOICE,
+					.datalen = sizeof(stereo_buf),
+					.samples = SAMPLES_PER_FRAME,
+				};
+
+				if (fr) {
+					ast_frame_free(fr, 0);
+					fr = NULL;
+				}
+
+				if (fr_read) {
+					memcpy(read_buf, fr_read->data.ptr, sizeof(read_buf));
+				} else {
+					memset(read_buf, 0, sizeof(read_buf));
+				}
+
+				if (fr_write) {
+					memcpy(write_buf, fr_write->data.ptr, sizeof(write_buf));
+				} else {
+					memset(write_buf, 0, sizeof(write_buf));
+				}
+
+				for (i = 0; i < SAMPLES_PER_FRAME; i++) {
+					stereo_buf[i * 2] = read_buf[i];
+					stereo_buf[i * 2 + 1] = write_buf[i];
+				}
+
+				stereo_frame.data.ptr = stereo_buf;
+				stereo_frame.subclass.format = ast_format_cache_get_slin_by_rate(SAMPLES_PER_FRAME);
+
+				fr = ast_frdup(&stereo_frame);
+			}
+
 			if ((*fs) && (fr)) {
 				struct ast_frame *cur;