[asterisk-users] Correct Caller-ID

[C F]

The correct way in the US is to send NPANXXXXXX without the 1, in fact
AT&T used to display unknown if 11 digit was received.
Vonage decided to add the 1 so that their fancy stupid boxes can dial
back directly from the box. Sorry for the rant but it has created me
more headaches that I care to remember.
Cell phone providers do not add the one, it's the phone that does.
Forward your cell phone number to a landline and you'll see that the 1
is gone.


On Mon, Aug 9, 2010 at 6:45 PM, John Novack
<jnovack at stromberg-carlson.org> wrote:
>
>
> Matt wrote:
>>
>>
>>
>> >I've seen caller-id come through from carriers as:
>> >NPA-NXX-xxxx, 1-NPA-NXX-xxxx, and +1-NPA-NXX-xxxx
>>
>> >My question is: what is the correct way to send Caller-ID by set
>> > standards?
>>
>>
>>
>> The correct answer to this depends on where you are.
>>
>> IMO the answer would be #2, but #3 would probably be acceptable – Google
>> wasn’t helpful on this one.
>>
>>
>
> OK... the reason I asked is because I've seen Vonage send the 1, and a
> cellular carrier I have sends the 1, but it seems that most phones are
> designed to not know what to do with that (e.g. they only ask for the local
> area code NPA), thus when I call comes through with the 1, the phone has no
> clue what to do with it.
>
> Also in the US.
>
> My Vonage account does NOT send the "1"  My T-mobile at home account DOES send
> the "1" Neither REQUIRE the "1" to be dialed!!
>
> IMO the "+" is not correct when sending CLID. It is correctly used in print
> when referencing international numbers.
>
> Why would you expect anyone to follow a standard?
>
> John Novack
>
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