Bandwidth Inc.
Techniques for vetting inbound calls in a telecommunication network

Abstract:

Techniques are described for vetting unwanted calls. At an inbound customer call handling apparatus, a SIP INVITE is received from a destination carrier servicing the inbound customer intended for a destination user agent (UA) device of the inbound customer. The SIP INVITE includes a current origination identifier (ORIG ID) comprised of a fixed length character string. The call handling apparatus accesses a database of stored ORIG ID character strings, each stored ORIG ID character string in the database having been included with a previous SIP INVITE that has been previously associated with an unwanted inbound call. The call handling apparatus analyzes the current ORIG ID character string to determine if it matches any stored ORIG ID character strings in the database. When there is a match to a stored ORIG ID character string, the SIP INVITE is not forwarded to the destination UA device. Otherwise, it is forwarded to the destination UA device.