diff --git a/src/libosmo-mgcp/mgcp_codec.c b/src/libosmo-mgcp/mgcp_codec.c
index 7f1a6d1..5d7f840 100644
--- a/src/libosmo-mgcp/mgcp_codec.c
+++ b/src/libosmo-mgcp/mgcp_codec.c
@@ -348,6 +348,25 @@
 	return -EINVAL;
 }
 
+/* Return true if octet-aligned is set in the given codec. Default to octet-aligned=0, i.e. bandwidth-efficient mode.
+ * See RFC4867 "RTP Payload Format for AMR and AMR-WB" sections "8.1. AMR Media Type Registration" and "8.2. AMR-WB
+ * Media Type Registration":
+ *
+ *    octet-align: Permissible values are 0 and 1.  If 1, octet-aligned
+ *                 operation SHALL be used.  If 0 or if not present,
+ *                 bandwidth-efficient operation is employed.
+ *
+ * https://tools.ietf.org/html/rfc4867
+ */
+static bool amr_is_octet_aligned(const struct mgcp_rtp_codec *codec)
+{
+	if (!codec->param_present)
+		return false;
+	if (!codec->param.amr_octet_aligned_present)
+		return false;
+	return codec->param.amr_octet_aligned;
+}
+
 /* Compare two codecs, all parameters must match up, except for the payload type
  * number. */
 static bool codecs_same(struct mgcp_rtp_codec *codec_a, struct mgcp_rtp_codec *codec_b)
@@ -364,6 +383,10 @@
 		return false;
 	if (strcmp(codec_a->subtype_name, codec_b->subtype_name))
 		return false;
+	if (!strcmp(codec_a->subtype_name, "AMR")) {
+		if (amr_is_octet_aligned(codec_a) != amr_is_octet_aligned(codec_b))
+			return false;
+	}
 
 	return true;
 }
diff --git a/tests/mgcp/mgcp_test.c b/tests/mgcp/mgcp_test.c
index 460ea9b..5ebe475 100644
--- a/tests/mgcp/mgcp_test.c
+++ b/tests/mgcp/mgcp_test.c
@@ -1716,7 +1716,6 @@
 	.amr_octet_aligned = true,
 };
 
-#if 0
 static const struct mgcp_codec_param amr_param_octet_aligned_false = {
 	.amr_octet_aligned_present = true,
 	.amr_octet_aligned = false,
@@ -1725,7 +1724,6 @@
 static const struct mgcp_codec_param amr_param_octet_aligned_unset = {
 	.amr_octet_aligned_present = false,
 };
-#endif
 
 struct testcase_mgcp_codec_pt_translate_codec {
 	int payload_type;
@@ -1850,6 +1848,58 @@
 			{ .end = true },
 		},
 	},
+	{
+		.descr = "test AMR with differing octet-aligned settings",
+		.codecs = {
+			{
+				{ 111, "AMR/8000", &amr_param_octet_aligned_true, },
+				{ 112, "AMR/8000", &amr_param_octet_aligned_false, },
+			},
+			{
+				{ 122, "AMR/8000", &amr_param_octet_aligned_false, },
+				{ 121, "AMR/8000", &amr_param_octet_aligned_true, },
+			},
+		},
+		.expect = {
+			{ .payload_type_map = {111, 121}, },
+			{ .payload_type_map = {112, 122} },
+			{ .end = true },
+		},
+	},
+	{
+		.descr = "test AMR with missing octet-aligned settings (defaults to 0)",
+		.codecs = {
+			{
+				{ 111, "AMR/8000", &amr_param_octet_aligned_true, },
+				{ 112, "AMR/8000", &amr_param_octet_aligned_false, },
+			},
+			{
+				{ 122, "AMR/8000", &amr_param_octet_aligned_unset, },
+			},
+		},
+		.expect = {
+			{ .payload_type_map = {111, -EINVAL}, },
+			{ .payload_type_map = {112, 122} },
+			{ .end = true },
+		},
+	},
+	{
+		.descr = "test AMR with NULL param (defaults to 0)",
+		.codecs = {
+			{
+				{ 111, "AMR/8000", &amr_param_octet_aligned_true, },
+				{ 112, "AMR/8000", &amr_param_octet_aligned_false, },
+			},
+			{
+				{ 122, "AMR/8000", NULL, },
+			},
+		},
+		.expect = {
+			{ .payload_type_map = {111, -EINVAL}, },
+			{ .payload_type_map = {112, 122} },
+			{ .end = true },
+		},
+	},
 };
 
 static void test_mgcp_codec_pt_translate(void)
diff --git a/tests/mgcp/mgcp_test.ok b/tests/mgcp/mgcp_test.ok
index 708e0c3..14d5d73 100644
--- a/tests/mgcp/mgcp_test.ok
+++ b/tests/mgcp/mgcp_test.ok
Binary files differ