[VoiceOps] IAM callername instead of CNAM

[Carlos Alvarez]

I guess I should have specified that this is a client-profile PRI which 
we have allocated as a one-to-one relationship for a specific customer. 
  However TWTC did tell me that they do this on all PRIs.


On 2/3/10 10:34 AM, David Birnbaum wrote:
> That's a mistake/misconfiguration.  I believe Canada sends CNAME inband,
> but in the US, it probably just means somebody is using a client-profile
> PRI for a carrier circuit, doing toll-bypass, or playing other games. We
> have seen this type of misconfiguration on smaller VoIP carriers.
>
> Time Warner may carry CNAM internal on their network so they can save
> the money on CNAM dips, but obviously that won't go far.
>
> Cheers,
>
> David.
>
> -----
>
> On Wed, 3 Feb 2010, Carlos Alvarez wrote:
>
>> Time Warner does transmit the name info that you send. We have a TWTC
>> PRI and I've seen the same thing when calling another number on their
>> network. It has even happened to numbers on other networks, though now
>> I can't remember which ones. One of their engineers confirmed that
>> they do this on purpose, but also couldn't tell me which other
>> networks accept this from them.
>>
>>
>> On 2/3/10 9:24 AM, milosz wrote:
>>> hi all,
>>>
>>> has anyone heard of a US residential carrier transmitting the callername
>>> parameter from the IAM instead of doing a normal CNAM lookup? i have
>>> some users--for whom the pbx is (intentionally) set up to transmit an
>>> invalid cpn--who are claiming that when they call their home phones from
>>> the office, their internal (sip) caller name appears on the caller id
>>> along with the invalid cpn, which makes no sense from a CNAM lookup
>>> standpoint. the only thing i could think of (other than they are
>>> nuts/lying) is that their gateway is transmitting the sip callername in
>>> the IAM and the carrier is passing that along instead of doing a lookup.
>>> the btn is the same for all users so that can be ruled out.
>>>
>>> they are all on cablevision or time warner.
>>>
>>> thanks,
>>>
>>> milosz
>>>
>>>
>>>
>>> _______________________________________________
>>> VoiceOps mailing list
>>> VoiceOps at voiceops.org
>>> https://puck.nether.net/mailman/listinfo/voiceops
>>
>> --
>> Carlos Alvarez
>> TelEvolve
>> 602-889-3003
>>
>> Advanced phone services simplified
>> _______________________________________________
>> VoiceOps mailing list
>> VoiceOps at voiceops.org
>> https://puck.nether.net/mailman/listinfo/voiceops
>>

-- 
Carlos Alvarez
TelEvolve
602-889-3003

Advanced phone services simplified