According to RFC 3261 we can set contact header to `Contact: *` But I can't find any restrictions to use header params in this case, for exampl: `Contact: *;expires=0` But pjsip library fails when try to parse such REGISTER messages. Could you possibly clarify this moment? _______________________________________________ Visit our blog: http://blog.pjsip.org pjsip mailing list pjsip@xxxxxxxxxxxxxxx http://lists.pjsip.org/mailman/listinfo/pjsip_lists.pjsip.org