--- asterisk-1.2.18_old/devicestate.c	2006-02-10 21:38:59.000000000 +0100
+++ asterisk-1.2.18/devicestate.c	2007-05-25 10:18:16.000000000 +0200
@@ -122,6 +122,9 @@
 	if (!chan_tech->devicestate) 	/* Does the channel driver support device state notification? */
 		return ast_parse_device_state(device);	/* No, try the generic function */
 	else {
+		res = ast_parse_device_state(device);
+		if (res == AST_DEVICE_RINGING)
+			return res;
 		res = chan_tech->devicestate(number);	/* Ask the channel driver for device state */
 		if (res == AST_DEVICE_UNKNOWN) {
 			res = ast_parse_device_state(device);