TELECOM Digest OnLine - Sorted: Call Forwarding and "Dialed Number" Information

Call Forwarding and "Dialed Number" Information

Biren (biren.gandhi@gmail.com)
9 May 2006 08:48:33 -0700

I have a question about call forwarding and availability of "dialed
number" (this could be applicable to both landline and GSM phones):

Some user has set up his/her phone (with number A) to forward "all"
incoming calls to a certain number B (using sequence *21*B# for GSM)
and some caller C calls in A's number.

Is there any way we can obtain "original dialed number" (i.e. A) at
site B -- before deciding to respond to the forwared call? At site B,
caller ID provides original caller (i.e. C) -- but can we correctly
obtain "called id" by some means? Is it available at all?

If number B is an 800 (or other toll-free) number with ANI/DNIS
service, can we get the originally dialed number?

Thanks.

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