diff --git a/openbsc/include/openbsc/bsc_api.h b/openbsc/include/openbsc/bsc_api.h
index 472c8e4..f52984f 100644
--- a/openbsc/include/openbsc/bsc_api.h
+++ b/openbsc/include/openbsc/bsc_api.h
@@ -34,6 +34,13 @@
 	void (*classmark_chg)(struct gsm_subscriber_connection *conn,
 			      const uint8_t *cm2, uint8_t cm2_len,
 			      const uint8_t *cm3, uint8_t cm3_len);
+
+	/**
+	 * Configure the multirate setting on this channel. If it is
+	 * not implemented AMR5.9 will be used.
+	 */
+	void (*mr_config)(struct gsm_subscriber_connection *conn,
+			  struct gsm48_multi_rate_conf *conf);
 };
 
 int bsc_api_init(struct gsm_network *network, struct bsc_api *api);
diff --git a/openbsc/include/openbsc/osmo_msc_data.h b/openbsc/include/openbsc/osmo_msc_data.h
index 6eebcdd..8e255a0 100644
--- a/openbsc/include/openbsc/osmo_msc_data.h
+++ b/openbsc/include/openbsc/osmo_msc_data.h
@@ -26,6 +26,7 @@
 #include "bsc_msc.h"
 
 #include <osmocom/core/timer.h>
+#include <osmocom/gsm/protocol/gsm_04_08.h>
 
 #include <regex.h>
 
@@ -68,6 +69,7 @@
 	int rtp_base;
 
 	/* audio codecs */
+	struct gsm48_multi_rate_conf amr_conf;
 	struct gsm_audio_support **audio_support;
 	int audio_length;
 
diff --git a/openbsc/src/libbsc/bsc_api.c b/openbsc/src/libbsc/bsc_api.c
index ad89fb2..2fab20b 100644
--- a/openbsc/src/libbsc/bsc_api.c
+++ b/openbsc/src/libbsc/bsc_api.c
@@ -155,6 +155,12 @@
 static void handle_mr_config(struct gsm_subscriber_connection *conn,
 			     struct gsm_lchan *lchan)
 {
+	struct bsc_api *api;
+	api = conn->bts->network->bsc_api;
+
+	if (api->mr_config)
+		return api->mr_config(conn, &lchan->mr_conf);
+
 	lchan->mr_conf.ver = 1;
 	lchan->mr_conf.icmi = 1;
 	lchan->mr_conf.m5_90 = 1;
diff --git a/openbsc/src/osmo-bsc/osmo_bsc_api.c b/openbsc/src/osmo-bsc/osmo_bsc_api.c
index 87d3f6e..df8c044 100644
--- a/openbsc/src/osmo-bsc/osmo_bsc_api.c
+++ b/openbsc/src/osmo-bsc/osmo_bsc_api.c
@@ -316,6 +316,34 @@
 	queue_msg_or_return(resp);
 }
 
+static void bsc_mr_config(struct gsm_subscriber_connection *conn,
+			  struct gsm48_multi_rate_conf *conf)
+{
+	struct osmo_msc_data *msc;
+
+	if (!conn->sccp_con) {
+		LOGP(DMSC, LOGL_ERROR,
+		     "No msc data available on conn %p. Audio will be broken.\n",
+		     conn);
+		return;
+	}
+
+	msc = conn->sccp_con->msc;
+
+	conf->ver = 1;
+	conf->icmi = 1;
+
+	/* maybe gcc see's it is copy of _one_ byte */
+	conf->m4_75 = msc->amr_conf.m4_75;
+	conf->m5_15 = msc->amr_conf.m5_15;
+	conf->m5_90 = msc->amr_conf.m5_90;
+	conf->m6_70 = msc->amr_conf.m6_70;
+	conf->m7_40 = msc->amr_conf.m7_40;
+	conf->m7_95 = msc->amr_conf.m7_95;
+	conf->m10_2 = msc->amr_conf.m10_2;
+	conf->m12_2 = msc->amr_conf.m12_2;
+}
+
 static struct bsc_api bsc_handler = {
 	.sapi_n_reject = bsc_sapi_n_reject,
 	.cipher_mode_compl = bsc_cipher_mode_compl,
@@ -325,6 +353,7 @@
 	.assign_fail = bsc_assign_fail,
 	.clear_request = bsc_clear_request,
 	.classmark_chg = bsc_cm_update,
+	.mr_config = bsc_mr_config,
 };
 
 struct bsc_api *osmo_bsc_api()
diff --git a/openbsc/src/osmo-bsc/osmo_bsc_msc.c b/openbsc/src/osmo-bsc/osmo_bsc_msc.c
index 55532db..a979681 100644
--- a/openbsc/src/osmo-bsc/osmo_bsc_msc.c
+++ b/openbsc/src/osmo-bsc/osmo_bsc_msc.c
@@ -494,5 +494,8 @@
 	msc_data->nr = nr;
 	msc_data->allow_emerg = 1;
 
+	/* Defaults for the audio setup */
+	msc_data->amr_conf.m5_90 = 1;
+
 	return msc_data;
 }
diff --git a/openbsc/src/osmo-bsc/osmo_bsc_vty.c b/openbsc/src/osmo-bsc/osmo_bsc_vty.c
index a3bf5af..f502683 100644
--- a/openbsc/src/osmo-bsc/osmo_bsc_vty.c
+++ b/openbsc/src/osmo-bsc/osmo_bsc_vty.c
@@ -75,6 +75,24 @@
 	return CMD_SUCCESS;
 }
 
+static void write_msc_amr_options(struct vty *vty, struct osmo_msc_data *msc)
+{
+#define WRITE_AMR(vty, msc, name, var) \
+	vty_out(vty, " amr-config %s %s%s", \
+		name, msc->amr_conf.var ? "allowed" : "forbidden", \
+		VTY_NEWLINE);
+
+	WRITE_AMR(vty, msc, "12_2k", m12_2);
+	WRITE_AMR(vty, msc, "10_2k", m10_2);
+	WRITE_AMR(vty, msc, "7_95k", m7_95);
+	WRITE_AMR(vty, msc, "7_40k", m7_40);
+	WRITE_AMR(vty, msc, "6_70k", m6_70);
+	WRITE_AMR(vty, msc, "5_90k", m5_90);
+	WRITE_AMR(vty, msc, "5_15k", m5_15);
+	WRITE_AMR(vty, msc, "4_75k", m4_75);
+#undef WRITE_AMR
+}
+
 static void write_msc(struct vty *vty, struct osmo_msc_data *msc)
 {
 	struct bsc_msc_dest *dest;
@@ -122,6 +140,9 @@
 
 	if (msc->local_pref)
 		vty_out(vty, " local-prefix %s%s", msc->local_pref, VTY_NEWLINE);
+
+	/* write amr options */
+	write_msc_amr_options(vty, msc);
 }
 
 static int config_write_msc(struct vty *vty)
@@ -383,6 +404,28 @@
 	return CMD_SUCCESS;
 }
 
+#define AMR_CONF_STR "AMR Multirate Configuration\n"
+#define AMR_COMMAND(name) \
+	DEFUN(cfg_net_msc_amr_##name,					\
+	  cfg_net_msc_amr_##name##_cmd,					\
+	  "amr-config " #name "k (allowed|forbidden)",			\
+	  AMR_CONF_STR "Bitrate\n" "Allowed\n" "Forbidden\n")		\
+{									\
+	struct osmo_msc_data *msc = osmo_msc_data(vty);			\
+									\
+	msc->amr_conf.m##name = strcmp(argv[0], "allowed") == 0; 	\
+	return CMD_SUCCESS;						\
+}
+
+AMR_COMMAND(12_2)
+AMR_COMMAND(10_2)
+AMR_COMMAND(7_95)
+AMR_COMMAND(7_40)
+AMR_COMMAND(6_70)
+AMR_COMMAND(5_90)
+AMR_COMMAND(5_15)
+AMR_COMMAND(4_75)
+
 DEFUN(cfg_net_bsc_mid_call_text,
       cfg_net_bsc_mid_call_text_cmd,
       "mid-call-text .TEXT",
@@ -473,6 +516,14 @@
 	install_element(MSC_NODE, &cfg_net_msc_type_cmd);
 	install_element(MSC_NODE, &cfg_net_msc_emerg_cmd);
 	install_element(MSC_NODE, &cfg_net_msc_local_prefix_cmd);
+	install_element(MSC_NODE, &cfg_net_msc_amr_12_2_cmd);
+	install_element(MSC_NODE, &cfg_net_msc_amr_10_2_cmd);
+	install_element(MSC_NODE, &cfg_net_msc_amr_7_95_cmd);
+	install_element(MSC_NODE, &cfg_net_msc_amr_7_40_cmd);
+	install_element(MSC_NODE, &cfg_net_msc_amr_6_70_cmd);
+	install_element(MSC_NODE, &cfg_net_msc_amr_5_90_cmd);
+	install_element(MSC_NODE, &cfg_net_msc_amr_5_15_cmd);
+	install_element(MSC_NODE, &cfg_net_msc_amr_4_75_cmd);
 
 	install_element_ve(&show_statistics_cmd);
 	install_element_ve(&show_mscs_cmd);