@@ -2932,6 +2932,8 @@ static void rpc_dlg_list_match_ex(rpc_t *rpc, void *c, int with_context)

 	str mop = {NULL, 0};

 	str mval = {NULL, 0};

 	str sval = {NULL, 0};

+	unsigned int ival = 0;

+	unsigned int mival = 0;

 	int n = 0;

 	int m = 0;

 	int vkey = 0;

@@ -2960,6 +2962,8 @@ static void rpc_dlg_list_match_ex(rpc_t *rpc, void *c, int with_context)

 		vkey = 2;

 	} else if(mkey.len==6 && strncmp(mkey.s, "callid", mkey.len)==0) {

 		vkey = 3;

+	} else if(mkey.len==8 && strncmp(mkey.s, "start_ts", mkey.len)==0) {

+		vkey = 4;

 	} else {

 		LM_ERR("invalid key %.*s\n", mkey.len, mkey.s);

 		rpc->fault(c, 500, "Invalid matching key parameter");

@@ -2983,6 +2987,10 @@ static void rpc_dlg_list_match_ex(rpc_t *rpc, void *c, int with_context)

 		}

 	} else if(strncmp(mop.s, "sw", 2)==0) {

 		vop = 2;

+	} else if(strncmp(mop.s, "gt", 2)==0) {

+		vop = 3;

+	} else if(strncmp(mop.s, "lt", 2)==0) {

+		vop = 4;

 	} else {

 		LM_ERR("invalid matching operator %.*s\n", mop.len, mop.s);

 		rpc->fault(c, 500, "Invalid matching operator parameter");

@@ -2992,6 +3000,18 @@ static void rpc_dlg_list_match_ex(rpc_t *rpc, void *c, int with_context)

 		n = 0;

 	}

+	if (vkey == 4  && vop <= 2) {

+		LM_ERR("Matching operator %.*s not supported with start_ts key\n", mop.len, mop.s);

+		rpc->fault(c, 500, "Matching operator not supported with start_ts key");

+		return;

+	}

+

+	if (vkey != 4  && vop >= 3) {

+		LM_ERR("Matching operator %.*s not supported with key %.*s\n", mop.len, mop.s, mkey.len, mkey.s);

+		rpc->fault(c, 500, "Matching operator not supported");

+		return;

+	}

+

 	for(i=0; i<d_table->size; i++) {

 		dlg_lock(d_table, &(d_table->entries[i]));

 		for(dlg=d_table->entries[i].first; dlg!=NULL; dlg=dlg->next) {

@@ -3009,6 +3029,9 @@ static void rpc_dlg_list_match_ex(rpc_t *rpc, void *c, int with_context)

 				case 3:

 					sval = dlg->callid;

 				break;

+				case 4:

+					ival = dlg->start_ts;

+				break;

 			}

 			switch(vop) {

 				case 0:

@@ -3031,6 +3054,17 @@ static void rpc_dlg_list_match_ex(rpc_t *rpc, void *c, int with_context)

 						matched = 1;

 					}

 				break;

+				case 3:		

+					/* greater than */

+					if (str2int(&mval, &mival) == 0 && ival > mival) {

+						matched = 1;

+					}

+				break;

+				case 4:

+					if (str2int(&mval, &mival) == 0 && ival < mival) {

+						matched = 1;

+					}

+				break;

 			}

 			if (matched==1) {

 				m++;