diff --git a/channels/chan_sip.c b/channels/chan_sip.c
index 5412daa47480432d69261017f70a346856416dd0..866738c2a72be59ba9b8b24f1d7e993596f3a980 100644
--- a/channels/chan_sip.c
+++ b/channels/chan_sip.c
@@ -6655,9 +6655,11 @@ static struct ast_frame *sip_rtp_read(struct ast_channel *ast, struct sip_pvt *p
 		f = &ast_null_frame;
 	}
 	/* Don't forward RFC2833 if we're not supposed to */
-	if (f && (f->frametype == AST_FRAME_DTMF) &&
-	    (ast_test_flag(&p->flags[0], SIP_DTMF) != SIP_DTMF_RFC2833))
+	if (f && (f->frametype == AST_FRAME_DTMF_BEGIN || f->frametype == AST_FRAME_DTMF_END) &&
+	    (ast_test_flag(&p->flags[0], SIP_DTMF) != SIP_DTMF_RFC2833)) {
+		ast_debug(1, "Ignoring DTMF (%c) RTP frame because dtmfmode is not RFC2833\n", f->subclass);
 		return &ast_null_frame;
+	}
 
 	/* We already hold the channel lock */
 	if (!p->owner || (f && f->frametype != AST_FRAME_VOICE))