two functions are not enabled in the onreply_route block. Can someone tell me how to modify the From and To fields of a SIP response such as 200 OK. Appreciate the help. Best wishes, Chen-Ch -- View this message in context: http://opensips-open-sip-server.1449251.n2.nabble.com/May-From-and-To-header-fields-be-modified-tp7581997.html Sent from the OpenSIPS - Users mailing list archive at Nabble.com.