At+t Corp.

Charles Grayson

Gerhard Buhler

Belkacem Manseur

Norris Brown

Yen-Ching Wendy Chen

Disclosed is a capability for differentiated in-network or off-network call treatment (e.g., different call features or services) on a per-call basis using the value of the carrier identification code (CIC) passed from an access provider to a second carrier in a call set-up message associated with an incoming call. In addition, the caller selection information (CSI) parameter may be used in conjunction with the CIC to provide differentiated call treatment. The CIC and CSI parameters together provide information about the call and the caller which can be used for, e.g., directed marketing activities aimed at non-presubscribed callers using the second carrier's network on a per-call basis.

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Somerset, NJ, United States of America

Charles Grayson