Index: channels/chan_sip.c
===================================================================
--- channels/chan_sip.c	(revision 89084)
+++ channels/chan_sip.c	(working copy)
@@ -3888,6 +3888,16 @@
 	return res;
 }
 
+static char *translate_escaped_pound(char *exten)
+{
+	char *rest, *marker;
+	while((marker = strstr(exten, "%23"))) {
+		rest = marker + 3;
+		*marker++ = '#';
+		memmove(marker, rest, strlen(rest) + 1);
+	}
+	return exten;
+}
 
 
 /*! \brief Initiate a call in the SIP channel
@@ -4014,9 +4024,8 @@
 	i->owner = tmp;
 	ast_module_ref(ast_module_info->self);
 	ast_copy_string(tmp->context, i->context, sizeof(tmp->context));
-	ast_copy_string(tmp->exten, i->exten, sizeof(tmp->exten));
+	ast_copy_string(tmp->exten, translate_escaped_pound(ast_strdupa(i->exten)), sizeof(tmp->exten));
 
-
 	/* Don't use ast_set_callerid() here because it will
 	 * generate an unnecessary NewCallerID event  */
 	tmp->cid.cid_ani = ast_strdup(i->cid_num);
@@ -8714,6 +8723,19 @@
 			if (!oreq)
 				ast_string_field_set(p, exten, uri);
 			return 0;
+		} else { /*Could be trying to match a literal '#'. Try replacing and see if that works.*/
+			char *tmpuri = ast_strdupa(uri);
+			char *rest, *marker;
+			while((marker = strstr(tmpuri, "%23"))) {
+				rest = marker + 3;
+				*marker++ = '#';
+				memmove(marker, rest, strlen(rest) + 1);
+			}
+			if(ast_exists_extension(NULL, p->context, tmpuri, 1, from) || !strcmp(uri, ast_pickup_ext())) {
+				if(!oreq)
+					ast_string_field_set(p, exten, uri);
+				return 0;
+			}
 		}
 	}