diff -r a3ac912f2857 -r b63f281afe6b opensips/enum-isn.txt
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/opensips/enum-isn.txt	Mon Jan 18 19:59:51 2010 +0100
@@ -0,0 +1,47 @@
+ISN (ITAD Subscriber Number) lookup integration contribution code
+
+Contribution
+
+This contribution introduces ISN formatting logic into the OpenSIPS
+ENUM module, allowing it to perform NAPTR based ISN lookups on the
+user part of the Request-URI in addition to the existing ENUM lookups.
+
+Rationale
+
+This extends the utility of the existing E.164 formatting logic which
+previously caused valid ISN lookups to fail (although the OpenSIPS
+documentation did suggest that lookups to freenum.org would succeed.)
+
+Compliance
+
+The author believes that the introduced logic complies with the
+relevant ITAD standards as defined by RFC 3872 and RFC 2871, however
+it seems that at this time ISN is rather loosely defined according to
+nonstandard documentation provided by freenum.org.
+
+Location
+
+http://scm.europalab.com/contrib/opensips/
+http://scm.europalab.com/contrib/file/tip/opensips/
+
+Instructions
+
+To integrate this contributed logic into the source code tree of
+a OpenSIPS distribution, download the unified diff and use the
+patch(1) command:
+
+  $ cd /tmp && mkdir enum-patch && cd enum-patch
+  $ wget http://scm.europalab.com/contrib/raw-file/tip/opensips/enum-isn.diff
+  $ tar zxf /tmp/opensips-<version>-tls.tar.gz
+  $ cd opensips-<version>-tls
+  $ patch -p0 <../enum-isn.diff
+
+Disclaimer
+
+This software contribution is based on source code from OpenSIPS SVN
+revision 6511. The author makes no guarantees as to this contribution.
+A user who downloads and executes it does so at his own risk.
+
+Michael Schloh von Bennewitz
+http://michael.schloh.com/
+Monday, 18. January 2010