Is it possible to have different SIP providers for inbound and outbound traffic?

[gigaboy]

Using the same phone numbers for both services?

 

[Saqqara]

Each SIP provider will have two separate telephone numbers.

The only way you could get to work, if the outbound provider masks the outgoing number if you want the same number

If you want separate numbers for incoming and outgoing , then no issues.

We can not answer this question - your preferred provider can

 

[gigaboy]

The only reason I'm asking is that our SIP provider is having great difficulty getting their contracted carrier (CenturyLink/Level3) (the authoritative holder of the number) to make a change to the CallerID Name (CNAM), which is impacting our business.

 

[leejor]

It is simply a matter of the outgoing service provider allowing you to send caller ID of the numbers you are using on the incoming service. It may, or not make a difference, when it comes to name display, as the name could be taken from a number of sources (data bases).

 

[cobaltit]

So what is the actual issue? I've never seen a provider have problems making CNAM updates but remember that they can't control what the recipient sees.

Here's a good explanation of the problem:

https://www.onsip.com/blog/how-caller-id-works-why-it-might-take-months-to-update

 

[gigaboy]

> I've never seen a provider have problems making CNAM updates

Welcome to twilio - Centurylink is making it real difficult.

 

[cobaltit]

Did you port the number to Twilio or did you buy the number from Twilio?

 

[leejor]

The name can come from a number of sources. It can be added at the origination, sometimes by the customer (less likely), or by the originating provider. A lookup can be done from a database, or the name may have been added in the originating providers switch, against the customers number. A name lookup can be done by the terminating provider, usually if no name is attached to the call. Most providers charge for this, if a database is queried, as it is usually not owned by the provider. In some cases, the name may simply show as a city, state, province, or country, if there is no user listing found.

 

[gigaboy]

Number was ported to Twilio - we've had the number since 1995

 

[cobaltit]

Was the caller-id correct before porting and now it's not?

 

[cobaltit]

And to answer your question only one carrier can own the number for incoming but you can make outgoing calls pushing the number with multiple carriers provided the carrier lets you push the caller-id. With Twilio they let you push the CID of a number you own but is not ported to them. You have to prove ownership first.

 

[gigaboy]

The CID NUMBER has always been correct. The CNAM was changed back to me, instead of who it should be listed under (my wife's name).

 

[gigaboy]

My wife's name is different than mine, but can be proven with a marriage cert. And she runs a C-corp.

 

[cobaltit]

So the easiest thing might be to just port the number back to CenturyLink and then set it up as a verified number with Twilio:

https://support.twilio.com/hc/en-us...ing-a-verified-outbound-caller-ID-with-Twilio

That handles the outbound. For the inbound you can pay for CFA with CenturyLink and have that forwarded to another number with Twilio. Then you'll just have the single SIP provider.

You can of course do the same thing with another SIP provider (like us) and then (optionally) skip the CFA part.

 

[leejor]

Usually the name is that of the account holder. The one the bill is sent to.

 

[cobaltit]

Yep. So what probably happened is that it was in her name before with CenturyLink and then ported to the Twilio account in his name. That part is normal. But it's odd that Twilio can't get CenturyLink to process the CNAM update which is what the op is stating.