Each BTS can be configured for speech support (other than GSM full rate)

Speech codings which are not supported by BTS will be removed from the
bearer capability information element after parsing. This way it is not
required for the MNCC application to consider support of each BTS.

Only GSM full rate is supported by default.
diff --git a/openbsc/src/libbsc/bsc_vty.c b/openbsc/src/libbsc/bsc_vty.c
index 7fa5ea7..b27184b 100644
--- a/openbsc/src/libbsc/bsc_vty.c
+++ b/openbsc/src/libbsc/bsc_vty.c
@@ -631,6 +631,15 @@
 		}
 	}
 
+	vty_out(vty, "  codec-support fr");
+	if (bts->codec.hr)
+		vty_out(vty, " hr");
+	if (bts->codec.efr)
+		vty_out(vty, " efr");
+	if (bts->codec.amr)
+		vty_out(vty, " amr");
+	vty_out(vty, "%s", VTY_NEWLINE);
+
 	config_write_bts_gprs(vty, bts);
 
 	if (bts->excl_from_rf_lock)
@@ -2658,6 +2667,73 @@
 	return CMD_SUCCESS;
 }
 
+static void _get_codec_from_arg(struct vty *vty, int argc, const char *argv[])
+{
+	struct gsm_bts *bts = vty->index;
+	struct bts_codec_conf *codec = &bts->codec;
+	int i;
+
+	codec->hr = 0;
+	codec->efr = 0;
+	codec->amr = 0;
+	for (i = 0; i < argc; i++) {
+		if (!strcmp(argv[i], "hr"))
+			codec->hr = 1;
+		if (!strcmp(argv[i], "efr"))
+			codec->efr = 1;
+		if (!strcmp(argv[i], "amr"))
+			codec->amr = 1;
+	}
+}
+
+#define CODEC_PAR_STR	" (hr|efr|amr)"
+#define CODEC_HELP_STR	"Half Rate\n" \
+			"Enhanced Full Rate\nAdaptive Multirate\n"
+
+DEFUN(cfg_bts_codec0, cfg_bts_codec0_cmd,
+	"codec-support fr",
+	"Codec Support settings\nFullrate\n")
+{
+	_get_codec_from_arg(vty, 0, argv);
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_bts_codec1, cfg_bts_codec1_cmd,
+	"codec-support fr" CODEC_PAR_STR,
+	"Codec Support settings\nFullrate\n"
+	CODEC_HELP_STR)
+{
+	_get_codec_from_arg(vty, 1, argv);
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_bts_codec2, cfg_bts_codec2_cmd,
+	"codec-support fr" CODEC_PAR_STR CODEC_PAR_STR,
+	"Codec Support settings\nFullrate\n"
+	CODEC_HELP_STR CODEC_HELP_STR)
+{
+	_get_codec_from_arg(vty, 2, argv);
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_bts_codec3, cfg_bts_codec3_cmd,
+	"codec-support fr" CODEC_PAR_STR CODEC_PAR_STR CODEC_PAR_STR,
+	"Codec Support settings\nFullrate\n"
+	CODEC_HELP_STR CODEC_HELP_STR CODEC_HELP_STR)
+{
+	_get_codec_from_arg(vty, 3, argv);
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_bts_codec4, cfg_bts_codec4_cmd,
+	"codec-support fr" CODEC_PAR_STR CODEC_PAR_STR CODEC_PAR_STR CODEC_PAR_STR,
+	"Codec Support settings\nFullrate\n"
+	CODEC_HELP_STR CODEC_HELP_STR CODEC_HELP_STR CODEC_HELP_STR)
+{
+	_get_codec_from_arg(vty, 4, argv);
+	return CMD_SUCCESS;
+}
+
 #define TRX_TEXT "Radio Transceiver\n"
 
 /* per TRX configuration */
@@ -3255,6 +3331,11 @@
 	install_element(BTS_NODE, &cfg_bts_si5_neigh_cmd);
 	install_element(BTS_NODE, &cfg_bts_excl_rf_lock_cmd);
 	install_element(BTS_NODE, &cfg_bts_no_excl_rf_lock_cmd);
+	install_element(BTS_NODE, &cfg_bts_codec0_cmd);
+	install_element(BTS_NODE, &cfg_bts_codec1_cmd);
+	install_element(BTS_NODE, &cfg_bts_codec2_cmd);
+	install_element(BTS_NODE, &cfg_bts_codec3_cmd);
+	install_element(BTS_NODE, &cfg_bts_codec4_cmd);
 
 	install_element(BTS_NODE, &cfg_trx_cmd);
 	install_node(&trx_node, dummy_config_write);