diff --git a/channels/chan_mgcp.c b/channels/chan_mgcp.c
index 9f334298e9cd77e1529b23956b0ee26741f32f3c..70cf0c4f206a2bdacca45f8f5b86b1f968f72e51 100644
--- a/channels/chan_mgcp.c
+++ b/channels/chan_mgcp.c
@@ -1513,7 +1513,7 @@ static struct ast_channel *mgcp_new(struct mgcp_subchannel *sub, int state)
 			i->dsp = ast_dsp_new();
 			ast_dsp_set_features(i->dsp,DSP_FEATURE_DTMF_DETECT);
 			/* this is to prevent clipping of dtmf tones during dsp processing */
-			ast_dsp_digitmode(i->dsp, DSP_DIGITMODE_NOQUELCH);
+			ast_dsp_set_digitmode(i->dsp, DSP_DIGITMODE_NOQUELCH);
 		} else {
 			i->dsp = NULL;
 		}
diff --git a/channels/chan_sip.c b/channels/chan_sip.c
index 012f4020fc936793016a367c5aa925932362efe6..55e3362b1a05719e387e35993ea5f3828a4a1123 100644
--- a/channels/chan_sip.c
+++ b/channels/chan_sip.c
@@ -5319,7 +5319,7 @@ static struct ast_channel *sip_new(struct sip_pvt *i, int state, const char *tit
 		i->vad = ast_dsp_new();
 		ast_dsp_set_features(i->vad, DSP_FEATURE_DTMF_DETECT);
 		if (global_relaxdtmf)
-			ast_dsp_digitmode(i->vad, DSP_DIGITMODE_DTMF | DSP_DIGITMODE_RELAXDTMF);
+			ast_dsp_set_digitmode(i->vad, DSP_DIGITMODE_DTMF | DSP_DIGITMODE_RELAXDTMF);
 	}
 
 	/* Set file descriptors for audio, video, realtime text and UDPTL as needed */
diff --git a/channels/chan_usbradio.c b/channels/chan_usbradio.c
index 06f97939d5acfd8f6505f80556e5d2d9421a405f..11c06e957ddef1da20b54fd1fd23092885e328c6 100644
--- a/channels/chan_usbradio.c
+++ b/channels/chan_usbradio.c
@@ -2285,7 +2285,7 @@ static struct chan_usbradio_pvt *store_config(struct ast_config *cfg, char *ctg)
 	o->dsp = ast_dsp_new();
 	if (o->dsp) {
 		ast_dsp_set_features(o->dsp, DSP_FEATURE_DTMF_DETECT);
-		ast_dsp_digitmode(o->dsp, DSP_DIGITMODE_DTMF | DSP_DIGITMODE_MUTECONF | DSP_DIGITMODE_RELAXDTMF);
+		ast_dsp_set_digitmode(o->dsp, DSP_DIGITMODE_DTMF | DSP_DIGITMODE_MUTECONF | DSP_DIGITMODE_RELAXDTMF);
 	}
 
 	if (o->rxctcssfreq != 0 && o->rxdemod == RX_AUDIO_SPEAKER)
diff --git a/channels/chan_vpb.cc b/channels/chan_vpb.cc
index df7dfc2aa2419460700974aa57fa7e3f96a4b87f..3e86572861bd21bcb8a67a4b45e069f3ea656b76 100644
--- a/channels/chan_vpb.cc
+++ b/channels/chan_vpb.cc
@@ -1634,9 +1634,9 @@ static struct vpb_pvt *mkif(int board, int channel, int mode, int gains, float t
 	if (use_ast_dtmfdet) {
 		tmp->vad = ast_dsp_new();
 		ast_dsp_set_features(tmp->vad, DSP_FEATURE_DTMF_DETECT);
-		ast_dsp_digitmode(tmp->vad, DSP_DIGITMODE_DTMF);
+		ast_dsp_set_digitmode(tmp->vad, DSP_DIGITMODE_DTMF);
 		if (relaxdtmf)
-			ast_dsp_digitmode(tmp->vad, DSP_DIGITMODE_DTMF|DSP_DIGITMODE_RELAXDTMF);
+			ast_dsp_set_digitmode(tmp->vad, DSP_DIGITMODE_DTMF|DSP_DIGITMODE_RELAXDTMF);
 	} else {
 		tmp->vad = NULL;
 	}
diff --git a/channels/chan_zap.c b/channels/chan_zap.c
index 8cbde4b4a95532ad31188c0eaaac37fdbfe1f457..88983415d89c2e622dedc0b7927e86f83474364d 100644
--- a/channels/chan_zap.c
+++ b/channels/chan_zap.c
@@ -3000,7 +3000,7 @@ static int zt_hangup(struct ast_channel *ast)
 		p->origcid_name = NULL;
 	}	
 	if (p->dsp)
-		ast_dsp_digitmode(p->dsp,DSP_DIGITMODE_DTMF | p->dtmfrelax);
+		ast_dsp_set_digitmode(p->dsp, DSP_DIGITMODE_DTMF | p->dtmfrelax);
 	if (p->exten)
 		p->exten[0] = '\0';
 
@@ -3452,15 +3452,15 @@ static int zt_setoption(struct ast_channel *chan, int option, void *data, int da
 		switch (*cp) {
 		case 1:
 			ast_debug(1, "Set option TONE VERIFY, mode: MUTECONF(1) on %s\n",chan->name);
-			ast_dsp_digitmode(p->dsp,DSP_DIGITMODE_MUTECONF | p->dtmfrelax);  /* set mute mode if desired */
+			ast_dsp_set_digitmode(p->dsp, DSP_DIGITMODE_MUTECONF | p->dtmfrelax);  /* set mute mode if desired */
 			break;
 		case 2:
 			ast_debug(1, "Set option TONE VERIFY, mode: MUTECONF/MAX(2) on %s\n",chan->name);
-			ast_dsp_digitmode(p->dsp,DSP_DIGITMODE_MUTECONF | DSP_DIGITMODE_MUTEMAX | p->dtmfrelax);  /* set mute mode if desired */
+			ast_dsp_set_digitmode(p->dsp, DSP_DIGITMODE_MUTECONF | DSP_DIGITMODE_MUTEMAX | p->dtmfrelax);  /* set mute mode if desired */
 			break;
 		default:
 			ast_debug(1, "Set option TONE VERIFY, mode: OFF(0) on %s\n",chan->name);
-			ast_dsp_digitmode(p->dsp,DSP_DIGITMODE_DTMF | p->dtmfrelax);  /* set mute mode if desired */
+			ast_dsp_set_digitmode(p->dsp, DSP_DIGITMODE_DTMF | p->dtmfrelax);  /* set mute mode if desired */
 			break;
 		}
 		break;
@@ -3543,7 +3543,7 @@ static int zt_setoption(struct ast_channel *chan, int option, void *data, int da
 		cp = (char *) data;
 		ast_debug(1, "Set option RELAX DTMF, value: %s(%d) on %s\n",
 			*cp ? "ON" : "OFF", (int) *cp, chan->name);
-		ast_dsp_digitmode(p->dsp, ((*cp) ? DSP_DIGITMODE_RELAXDTMF : DSP_DIGITMODE_DTMF) | p->dtmfrelax);
+		ast_dsp_set_digitmode(p->dsp, ((*cp) ? DSP_DIGITMODE_RELAXDTMF : DSP_DIGITMODE_DTMF) | p->dtmfrelax);
 		break;
 	case AST_OPTION_AUDIO_MODE:  /* Set AUDIO mode (or not) */
 		cp = (char *) data;
@@ -5930,7 +5930,7 @@ static struct ast_channel *zt_new(struct zt_pvt *i, int state, int startpbx, int
 				}
 #endif
 				ast_dsp_set_features(i->dsp, features);
-				ast_dsp_digitmode(i->dsp, DSP_DIGITMODE_DTMF | i->dtmfrelax);
+				ast_dsp_set_digitmode(i->dsp, DSP_DIGITMODE_DTMF | i->dtmfrelax);
 				if (!ast_strlen_zero(progzone))
 					ast_dsp_set_call_progress_zone(i->dsp, progzone);
 				if (i->busydetect && CANBUSYDETECT(i)) {
@@ -6203,9 +6203,9 @@ static void *ss_thread(void *data)
 		/* set digit mode appropriately */
 		if (p->dsp) {
 			if (NEED_MFDETECT(p))
-				ast_dsp_digitmode(p->dsp,DSP_DIGITMODE_MF | p->dtmfrelax); 
+				ast_dsp_set_digitmode(p->dsp, DSP_DIGITMODE_MF | p->dtmfrelax); 
 			else 
-				ast_dsp_digitmode(p->dsp,DSP_DIGITMODE_DTMF | p->dtmfrelax);
+				ast_dsp_set_digitmode(p->dsp, DSP_DIGITMODE_DTMF | p->dtmfrelax);
 		}
 		memset(dtmfbuf, 0, sizeof(dtmfbuf));
 		/* Wait for the first digit only if immediate=no */
@@ -6319,14 +6319,14 @@ static void *ss_thread(void *data)
 	                        return NULL;
 			}
                         zt_set_hook(p->subs[SUB_REAL].zfd, ZT_OFFHOOK);
-                        ast_dsp_digitmode(p->dsp,DSP_DIGITMODE_MF | p->dtmfrelax);
+                        ast_dsp_set_digitmode(p->dsp, DSP_DIGITMODE_MF | p->dtmfrelax);
                         res = my_getsigstr(chan, anibuf, "#", 10000);
                         if ((res > 0) && (strlen(anibuf) > 2)) {
 				if (anibuf[strlen(anibuf) - 1] == '#')
 					anibuf[strlen(anibuf) - 1] = 0;
 				ast_set_callerid(chan, anibuf + 2, NULL, anibuf + 2);
 			}
-                        ast_dsp_digitmode(p->dsp,DSP_DIGITMODE_DTMF | p->dtmfrelax);
+                        ast_dsp_set_digitmode(p->dsp, DSP_DIGITMODE_DTMF | p->dtmfrelax);
 		}
 
 		ast_copy_string(exten, dtmfbuf, sizeof(exten));
@@ -6411,7 +6411,7 @@ static void *ss_thread(void *data)
 		if (NEED_MFDETECT(p)) {
 			if (p->dsp) {
 				if (!p->hardwaredtmf)
-					ast_dsp_digitmode(p->dsp,DSP_DIGITMODE_DTMF | p->dtmfrelax); 
+					ast_dsp_set_digitmode(p->dsp, DSP_DIGITMODE_DTMF | p->dtmfrelax); 
 				else {
 					ast_dsp_free(p->dsp);
 					p->dsp = NULL;
@@ -8512,7 +8512,7 @@ static struct zt_pvt *mkintf(int channel, struct zt_chan_conf conf, struct zt_pr
 		if (tmp->subs[SUB_REAL].zfd > -1) {
 			set_actual_gain(tmp->subs[SUB_REAL].zfd, 0, tmp->rxgain, tmp->txgain, tmp->law);
 			if (tmp->dsp)
-				ast_dsp_digitmode(tmp->dsp, DSP_DIGITMODE_DTMF | tmp->dtmfrelax);
+				ast_dsp_set_digitmode(tmp->dsp, DSP_DIGITMODE_DTMF | tmp->dtmfrelax);
 			update_conf(tmp);
 			if (!here) {
 				if ((conf.chan.sig != SIG_BRI) && (conf.chan.sig != SIG_BRI_PTMP) && (conf.chan.sig != SIG_PRI) && (conf.chan.sig != SIG_SS7))
diff --git a/include/asterisk/dsp.h b/include/asterisk/dsp.h
index 1235c3ae0d408719da8885100e09d490c6314ef1..c1a3670455a45140595b9c8a7b9e45b7774ba844 100644
--- a/include/asterisk/dsp.h
+++ b/include/asterisk/dsp.h
@@ -115,7 +115,7 @@ void ast_dsp_set_features(struct ast_dsp *dsp, int features);
 int ast_dsp_getdigits(struct ast_dsp *dsp, char *buf, int max);
 
 /*! \brief Set digit mode */
-int ast_dsp_digitmode(struct ast_dsp *dsp, int digitmode);
+int ast_dsp_set_digitmode(struct ast_dsp *dsp, int digitmode);
 
 /*! \brief Set fax mode */
 int ast_dsp_set_faxmode(struct ast_dsp *dsp, int faxmode);
diff --git a/main/dsp.c b/main/dsp.c
index e2de31af412119f59eac4b2aba1737be041d78ee..92d9a57252de8d685099d6c5b696829aa00aaf82 100644
--- a/main/dsp.c
+++ b/main/dsp.c
@@ -1495,7 +1495,7 @@ void ast_dsp_reset(struct ast_dsp *dsp)
 	dsp->ringtimeout= 0;
 }
 
-int ast_dsp_digitmode(struct ast_dsp *dsp, int digitmode)
+int ast_dsp_set_digitmode(struct ast_dsp *dsp, int digitmode)
 {
 	int new;
 	int old;