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Call Forward with Caller ID

Hi

We have been asked by a customer if it is possible to forward a call using call forward all, and still display the original caller id.

Basically the system forwards all calls after hours to a mobile. But the customer wants the caller's number to display on the mobile. Is this possible?

They are using a new Cisco UC500 series.

Many Thanks

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Accepted Solutions
Hall of Fame Super Gold

Re: Call Forward with Caller ID

Hi,

No, generally it's not possible, because telco doesn't accept arbitrary numbers as calling.

Otherwise, it would be possible for anybody, to originate calls pretending to be someone else, for prank or malice, obviously this is not safe.

I said generally because some telcos in the US, for PRI customers, don't care about which calling number is used, and send it unchanged.

Hope this helps, please rate post if i does!

4 REPLIES
Hall of Fame Super Gold

Re: Call Forward with Caller ID

Hi,

No, generally it's not possible, because telco doesn't accept arbitrary numbers as calling.

Otherwise, it would be possible for anybody, to originate calls pretending to be someone else, for prank or malice, obviously this is not safe.

I said generally because some telcos in the US, for PRI customers, don't care about which calling number is used, and send it unchanged.

Hope this helps, please rate post if i does!

New Member

Call Forward with Caller ID

I don't know if this is possible on a UC500, but in my experience, it is usually able to specify any valid caller ID on a PRI.  At least as far as I've seen, on a PRI they are not concerned with your spoofing Caller ID.

Hall of Fame Super Gold

Call Forward with Caller ID

Brett Gustafson wrote:

I don't know if this is possible on a UC500, but in my experience, it is usually able to specify any valid caller ID on a PRI.  At least as far as I've seen, on a PRI they are not concerned with your spoofing Caller ID.

That is true in the US, but not in other countries. And even in the US, is not allowed anymore on most SIP trunks.

New Member

Paolo, is this statement

Paolo, is this statement still valid?

My provider allows me to send whatever callerID I want to PSTN.

However, even though I'm not able to send the originator callerID back to PSTN via CFW in H323 GW.

Let me know if you can point me out to the right direction.

Thanks!

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