diff --git a/src/sdp/str.c b/src/sdp/str.c
new file mode 100644
index 0000000..e50d842
--- /dev/null
+++ b/src/sdp/str.c
@@ -0,0 +1,65 @@
+/**
+ * @file sdp/str.c  SDP strings
+ *
+ * Copyright (C) 2010 Creytiv.com
+ */
+#include <re_types.h>
+#include <re_fmt.h>
+#include <re_list.h>
+#include <re_sa.h>
+#include <re_sdp.h>
+
+
+const char sdp_attr_fmtp[]     = "fmtp";      /**< fmtp                 */
+const char sdp_attr_maxptime[] = "maxptime";  /**< maxptime             */
+const char sdp_attr_ptime[]    = "ptime";     /**< ptime                */
+const char sdp_attr_rtcp[]     = "rtcp";      /**< rtcp                 */
+const char sdp_attr_rtpmap[]   = "rtpmap";    /**< rtpmap               */
+
+const char sdp_media_audio[]   = "audio";     /**< Media type 'audio'   */
+const char sdp_media_video[]   = "video";     /**< Media type 'video'   */
+const char sdp_media_text[]    = "text";      /**< Media type 'text'    */
+
+const char sdp_proto_rtpavp[]  = "RTP/AVP";   /**< RTP Profile          */
+const char sdp_proto_rtpsavp[] = "RTP/SAVP";  /**< Secure RTP Profile   */
+
+
+/**
+ * Get the SDP media direction name
+ *
+ * @param dir Media direction
+ *
+ * @return Name of media direction
+ */
+const char *sdp_dir_name(enum sdp_dir dir)
+{
+	switch (dir) {
+
+	case SDP_INACTIVE: return "inactive";
+	case SDP_RECVONLY: return "recvonly";
+	case SDP_SENDONLY: return "sendonly";
+	case SDP_SENDRECV: return "sendrecv";
+	default:           return "??";
+	}
+}
+
+
+/**
+ * Get the SDP bandwidth name
+ *
+ * @param type Bandwidth type
+ *
+ * @return Bandwidth name
+ */
+const char *sdp_bandwidth_name(enum sdp_bandwidth type)
+{
+	switch (type) {
+
+	case SDP_BANDWIDTH_CT:   return "CT";
+	case SDP_BANDWIDTH_AS:   return "AS";
+	case SDP_BANDWIDTH_RS:   return "RS";
+	case SDP_BANDWIDTH_RR:   return "RR";
+	case SDP_BANDWIDTH_TIAS: return "TIAS";
+	default:                 return "??";
+	}
+}