[VoIP] ENUM Round Robin DNS?

Ian Jolly ian at uax.org.uk
Tue Jun 12 04:22:07 CDT 2007 

If you got my Speaking Clock - you've got it correct!!

Jon was worried that by having some UK codes accessed in the UK without the
'0' i.e. 8081  that they may clash with area codes for folk dialling into
the UK.  i.e. there may have been a UK area code 808 (or 8081)  but that was
never the case.  Thus +44-8081  is fine

However if we were to have other UK codes dialled such as 151 (Faults) or
192 (Directory Enquiries)  which would become +44-151 or +44-192 when sent
to the ENUM server.

They could clash with UK area codes used in the London area.

All London area codes were originally  +44-1-XXX thus there could have been
a clash with following area codes

1-511 xxxx         Plaistow and Canning Town
1-514 xxxx         Ilford
1-515 xxxx         Poplar
1-517 xxxx         Dagenham
1-518 xxxx         Ilford
1-519 xxxx         Stratford and Forest Gate

1-920 xxxx         City of London (Moorgate)
1-921 xxxx         Waterloo
1-922 xxxx         Waterloo
1-924 xxxx         Battersea
1-925 xxxx         Whitehall
1-927 xxxx         Bloomsbury / Soho
1-928 xxxx         Waterloo
1-929 xxxx         City of London (Monument)

I've just tried it and it works fine from here by just dialling 8081 - set
one of my 'local' contexts up to go straight to the ENUM server

exten => _8081,1,Macro(dialcnet,44${EXTEN:0})
exten => _8081,2,Macro(fastbusy)

 Executing Macro("IAX2/00648532876-46", "dialcnet|448081") in new stack
    -- Executing Set("IAX2/00648532876-46", "E164NETWORKS=std.ckts.info") in
new stack
    -- Executing GotoIf("IAX2/00648532876-46", "0?begin") in new stack
    -- Executing Set("IAX2/00648532876-46", "ARG1=+448081") in new stack
    -- Executing NoOp("IAX2/00648532876-46", "dialcnet1 step 4") in new
stack
    -- Executing Set("IAX2/00648532876-46", "ENUMNET=std.ckts.info") in new
stack
    -- Executing Set("IAX2/00648532876-46", "E164NETWORKS=") in new stack
    -- Executing Set("IAX2/00648532876-46", "ENUMCOUNT=2") in new stack
    -- Executing GotoIf("IAX2/00648532876-46", "0?begin") in new stack
    -- Executing Set("IAX2/00648532876-46", "ENUMPTR=1") in new stack
    -- Executing Set("IAX2/00648532876-46",
"ENUM=iax2:cnetguest at 81.174.170.48/448081") in new stack

However if I do a repeat call virtually straight away, it comes to me and
not Jon's Speaking Clock.

Another call goes to Jon's Clock number  if I leave a few minutes between
the calls.
 -- Executing Set("IAX2/00648532876-2", "ARG1=+448081") in new stack
    -- Executing NoOp("IAX2/00648532876-2", "dialcnet1 step 4") in new stack
    -- Executing Set("IAX2/00648532876-2", "ENUMNET=std.ckts.info") in new
stack
    -- Executing Set("IAX2/00648532876-2", "E164NETWORKS=") in new stack
    -- Executing Set("IAX2/00648532876-2", "ENUMCOUNT=2") in new stack
    -- Executing GotoIf("IAX2/00648532876-2", "0?begin") in new stack
    -- Executing Set("IAX2/00648532876-2", "ENUMPTR=1") in new stack
    -- Executing Set("IAX2/00648532876-2",
"ENUM=iax2:cnet at ecmo.dyndns.info/448081") in new stack
    -- Executing GotoIf("IAX2/00648532876-2", "0?continue") in new stack
    -- Executing GotoIf("IAX2/00648532876-2", "0?sipuri") in new stack
    -- Executing GotoIf("IAX2/00648532876-2", "1?iaxuri") in new stack
    -- Goto (macro-dialcnet,s,20)
    -- Executing Set("IAX2/00648532876-2",
"DIALSTR=IAX2/cnet at ecmo.dyndns.info/448081") in new stack

Jon's Clock doesn't appear to be working !  But at least the call is routing
correctly.

Incidentally, my Speaking Clock once called remains 'on line' until the end
of a 60 second cycle. Thus if you call again too soon, the number will give
busy tone. Eventually this will be changed.

Ian

+44 (0)  352      82 26 (via a 1929 GPO Rural Automatic eXchange!) from 
CNET - the Heritage Telephone Network
+44 (0)1352 83 82 26 (via a 1929 GPO Rural Automatic eXchange!) from  Public 
Telephone Network
FWD Telephone No  83 2230


----- Original Message ----- 
From: "Greg Blakely" <greg at vyger.net>
To: "Ian Jolly" <ian at uax.org.uk>; "Voice Over IP Tandem for Analog Switches" 
<voip at ckts.info>
Sent: Tuesday, June 12, 2007 4:20 AM
Subject: RE: [VoIP] ENUM Round Robin DNS?


> Please forgive a NANPA-centric guy, but...
>
> 1. Does this mean that I should do something OTHER than 448081, or IN
> ADDITION to it?
>
> 2. I'm assuming that 44-8081 is the entire number, as I got Ian's
> speaking clock when calling it.
>
>
>
>> -----Original Message-----
>> From: voip-bounces at ckts.info [mailto:voip-bounces at ckts.info]
>> On Behalf Of Ian Jolly
>> Sent: Monday, June 11, 2007 7:58 AM
>> To: Voice Over IP Tandem for Analog Switches
>> Subject: Re: [VoIP] ENUM Round Robin DNS?
>>
>> There should not be a code clash with UK area code 8081
>> because "08081" was never used as a code within the UK -
>> hence we can say it is reserved for the 'Speaking Clock'
>>
>> Ian J
>> +64 85 32 864 from CNET
>> +44 (0)  352      82 26 (via a 1929 GPO Rural Automatic
>> eXchange!) from
>> CNET - the Heritage Telephone Network
>> +44 (0)1352 83 82 26 (via a 1929 GPO Rural Automatic eXchange!) from
>> +Public
>> Telephone Network
>> FWD Telephone No  83 2230
>>
>>
>> ----- Original Message -----
>> From: "Jonathan Kay" <g4vft at btinternet.com>
>> To: "Voice Over IP Tandem for Analog Switches" <voip at ckts.info>
>> Sent: Monday, June 11, 2007 1:49 PM
>> Subject: Re: [VoIP] ENUM Round Robin DNS?
>>
>>
>> > I've just tried dig robin, and it  alternates from my Asterisk box.
>> > Can we try this for real please Greg?
>> > code 448081 to Ian Jolly and Me.
>> >
>> > cnetguest at 81.174.170.48
>> > cnet at ecmo.dyndns.info
>> >
>> > As I understand this, if we come across a conflict, where
>> an Office code
>> > coincides this shouldn't be a problem?
>> > For example Code only 44 151, and an office code  44 (0) 151xxx, the
>> > longer string will match first, and route to that office. A
>> code only
>> > call will match and route to the RR list?
>> > Many thanks
>> >
>> > Jon
>> >
>> >
>> > _______________________________________________
>> > VoIP mailing list
>> > VoIP at ckts.info
>> > http://lists.ckts.info/mailman/listinfo/voip
>> > Project Web Page: http://www.ckts.info/
>> >
>> >
>> > -- 
>> > No virus found in this incoming message.
>> > Checked by AVG Free Edition.
>> > Version: 7.5.472 / Virus Database: 269.8.13/843 - Release
>> Date: 10/06/2007
>> > 13:39
>> >
>> >
>>
>> _______________________________________________
>> VoIP mailing list
>> VoIP at ckts.info
>> http://lists.ckts.info/mailman/listinfo/voip
>> Project Web Page: http://www.ckts.info/
>>
>>
>
>
> -- 
> No virus found in this incoming message.
> Checked by AVG Free Edition.
> Version: 7.5.472 / Virus Database: 269.8.13/843 - Release Date: 10/06/2007 
> 13:39
>
>

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