[Serusers] freenum.org - toll-free ENUM project - ser recipe - sr-users

8 Jan 2004

This is usable if you have Juha Heinanen's patches (in "unstable" as 
of December 17, 2003) for multiple suffixes for ENUM lookups.  This 
is a "temporary" hack until ENUM is rolled out globally (zzzzzz....)

If anyone has a +1-800 gateway (North America) that they would like 
to see added, please send me an NS PTR or NAPTR for it and we'll put 
it in place.

JT

At 5:10 PM +0100 1/8/04, Michael Haberler wrote:
...
 Date: Thu, 08 Jan 2004 17:10:56 +0100
To: [snip]
From: Michael Haberler &lt;mah(a)eunet.at&gt;
Subject: freenum.org - free "global" 800 service based on
   infrastructure ENUM

Happy New Year!

You will recall we discussed setting up a little infrastructure ENUM 
trial project. We would populate freenum.org with NAPTR records 
pointing to local gateway operators willing to gateway "free" calls.

Ok, works for us now! Axel has completed the SIP express router 
setup for the at43 users, and Otmar has done the Asterisk part. The 
new enum module for SER is needed so arbitrary domain suffices can 
be used for lookup. A configuration snippet is attached. Any +43800 
number listed in freenum.org (or wildcards for ranges) will be 
terminated via a local Asterisk gateway.

In simple words: add the below code between #start and #end and your 
users will be able to dial any Austrian +43 800 number. Try the 
nic.at number +43 800 888 888 to start with.

We encourage you to try this out with your SIP setup, and maybe you 
can contribute some local termination of 800 or other free numbers.

If you want to contribute termination, drop us a mail and we'll add 
the entries to freenum.org. Let us know before you inform a sizeable 
user base about this..

This rocks - it is the easiest way for global free numbers I've seen so far!

cheers,

-Michael

snippet from ser.cfg:

         # catch voice:sip ENUM entries, only if PSTN not forced
         if (enum_query("e164.arpa.", "voice")) {
             if (is_uri_host_local()) {
                 route(5);
                 break;
             };
             if (!t_relay()) {
                 xlog("L_ERR", "%is [%Tf]: %rm %fu -> %ru [R4]: ENUM 
destination: relaying failed\n");
                 sl_reply_error();
                 break;
             };
             break;
         };
	 #start
         # look up freenum.org ENUM entries
         if (enum_query("freenum.org")) {
             if (!t_relay()) {
                 xlog("L_ERR", "%is [%Tf]: %rm %fu -> %ru [R4]: 
freenum.org destination: relaying failed\n");
                 sl_reply_error();
                 break;
             };
             xlog("L_ERR", "%is [%Tf]: %rm %fu -> %ru [R4]: 
freenum.org destination\n");
             break;
         };
	 #end
         # nothing found, try PSTN
         if (method=="CANCEL" || method=="BYE" ||
method=="ACK") {
             xlog("L_INFO", "%is [%Tf]: %rm %fu -> %ru [R4]: just 
forwarding to PSTN");
             rewritehostport("1.2.3.4:5060");
             t_relay();
             break;
         }; 