T-mobile Usa, Inc.

Jose R Mendoza, Jr

Homer Nicolas B Filart

Andrew Lee Watts

Tong Luo

Dinko Dinkov

Kevin Wai-Chun Lam

Srinivasa Rao Bodapotula

Sandip K Shrestha

Sarah M Fleming

The present disclosure describes techniques for verifying an identity of an originating device that initiates a VoIP communication with a recipient device. Specifically, an attestation parameter module is configured to detect a call request associated with a VoIP communication that is initiated by an originating device. The attestation parameter module may authenticate an identity of the originating device, and in doing so, insert an attestation parameter into an identity header of a modified SIP INVITE message sent to the recipient device. In response to receiving the modified SIP INVITE message with the attestation parameter, the telecommunication network associated with the recipient device may verify the identity of the originating device based on the attestation parameter included within the SIP INVITE message. In some examples, the attestation parameter module may generate and insert an attestation parameter within a modified SIP INVITE message that is initiated in a SIP/non-SIP telecommunication network.

Originating caller verification via insertion of an attestation parameter

A Secure Telephony Identity (STI) proxy server is described for intercepting incoming Voice over Internet Protocol (VoIP) communication requests for the purpose of mitigating an effect of fraudulent and nuisance VoIP communications. The STI proxy server may facilitate an STI verification server in verifying an authenticity of an originating network associated with an incoming call request. In one example, the STI proxy server may verify that the visited network is permitted to interact with the home network, based on a list of permissible networks. In addition, the STI proxy server may determine whether public STI certificates associated with an originating network have expired or set to expire within a predetermined time interval. In response to an actual o impending expiration, the STI proxy server may facilitate retrieval of a superseding, new public STI certificate for use by an STI authentication server to digitally sign an outgoing SIP INVITE messages.

Secure telephone identity (STI) certificate management system

The present disclosure describes techniques for selective attestation of a wireless communication session between an originating device and destination device. Attestation of the originating device identity depends in part on determining that the destination network associated with the destination device deploys a STIR/SHAKEN framework for end-to-end authentication and assertion of a telephone identity. This disclosure describes techniques to verify that the destination network has deployed the STIR/SHAKEN framework based on the administrative operator carrier number (AOCN) or operator carrier number (OCN) of the destination network. In response to determining the destination network has deployed the STIR/SHAKEN framework, a carrying node is configured to selectively generate instructions to include an attestation of an identity of the originating device in the SIP INVITE message sent to the destination network.

Selective attestation of wireless communications

A request is received to suspend providing scam protection to a user device that initiated an outgoing emergency voice call or an outgoing emergency communication message to a Public Safety Answering Point (PSAP). Scam protection for the user device is suspended for a predetermined time period, which allows the PSAP to make return emergency voice calls or send return emergency communication messages to the user device without the scam protection server marking the return emergency voice calls as a scam voice call or marking the emergency communication messages as a scam message during the predetermined time period.

Growing community of inventors

Renton, WA, United States of America

Jose R Mendoza, Jr