[asterisk-users] Please some enlightment on ENUM !!

[Leif Neland]

Norbert Zawodsky wrote:
> Leif Neland schrieb:
>   
>>  
>>
>>     ----- Original Message -----
>>     *From:* Norbert Zawodsky <mailto:norbert at zawodsky.at>
>>     *To:* Asterisk Users Mailing List - Non-Commercial Discussion
>>     <mailto:asterisk-users at lists.digium.com>
>>     *Sent:* Monday, November 23, 2009 3:15 PM
>>     *Subject:* [asterisk-users] Please some enlightment on ENUM !!
>>
>>     Hello all you Gurus out there!
>>
>>     Please could you explain something to me:
>>
>>     Currently I try to get ENUMLOOKUP() working. Naturally I do all the
>>     testing with my own number.
>>
>>     I registered my number at e164.org
>>     I paid for registration of my number at a registration agent for
>>     e164.arpa
>>     (I know, I don't need both. I just did the .arpa registration
>>     first and
>>     later discoverd the free .org service....)
>>     Assume my number was +4311234567
>>
>>     "dig 7.6.5.4.3.2.1.1.3.4.e164.org" and "dig
>>     7.6.5.4.3.2.1.1.3.4.e164.arpa" both return NAPTR records.
>>
>>     Now for the less clearer points:
>>
>>     Your'e supposed to register your number without any extension.
>>     If I have some extensions here, how can the calling party get the
>>     correct sip uri to the requested extension?
>>     Do I have to run my own DNS server in that case?
>>
>>     If for example if someone wants to call extension 10, is the
>>     ENUMLOOKUP(431123456710) request forwarded to my local DNS server
>>     by the
>>     e164.arpa server? Or how does that work?
>>
>> If everybody supported enum, it might be usefull to register extension
>> 10 in enum, otherwise:
>>  
>> Your extension 10 must have its own phonenumber, to be able to dial it
>> directly.
>> Just as with ordinary pabx.
>> Eg:
>> 123 555 0000 is the reception
>> 123 555 0010 is extension 10
>>  
>> Just some ideas:
>> Is there "free" (as in not connected to a voisp) numbers, which can be
>> registered in enum?
>> Then you could use those numbers for extensions. But they would only
>> be callable by enum.
>>  
>> If the calling of extensions is only to be used by "knowledgeable
>> friends" you could have them add your own enum-domain to their setup.
>>  
>> Leif
>>     
> Hi Leif!
>
> No, I cannot believe that this was the right way. It would mean that I
> would have to register (& pay !!) for every single extension.

Just as you would have to pay for a bunch of PSTN-numbers if people 
should be able to call into the extensions via PSTN

As ENUM is implemented, it is a mapping of PSTN-numbers to routing.
There is not an option to further delegate numbers "below" a PSTN-number 
to extensions.
But people can dial into your Asterisk via ENUM, and then dial the 
extension at the voice prompt.

However, at e164.org, you can get a FREE164 number out of the +882 99 
number pool.
These numbers are for dialing Internet hosts only, they are not 'real' 
telephone numbers!

There you can get a series like 88299 008971 0 to 88299 008971 9999 for 
your extensions.

Leif