Syniverse Technologies, LLC

Karan Mehra

James F Evans

Jon Sexson

A contextual SS7 firewall filter is inserted between a network operator and its roaming partners intra network and inter network SS7 traffic. SS7 firewall filter validates GSM MAP and GSM CAP messages based on specific criteria as provisioned for those message types and either allows them or blocks them from reaching their intended destination based on the validation results. The validation step involves verification of MSU correctness, verification of correctness of SS7 MTP fields for each MSU, and verification of correctness of SS7 SCCP fields for each MSU. SS7 firewall filter blocks GSM messages that fail at least one of the verification steps.

Contextual signaling system 7 (SS7) firewall and associated method of use

GTP firewall service to block or allow GTP-C v1 messages from specific SGSN/GGSN and GTP-C v2 messages from specific SGW/PGW to prevent fraudulent activity occurring from any specific serving node or home node. GTP Traffic from specific SGSN (3G) or SGW (4G) can be blocked going to specific home operator, including 3G GSM to 4G LTE and 4G LTE to 3G GSM protocol interoperability provided by GTP Firewall. Individual Information Elements within GTP-C v1 and GTP-C v2 messages will be monitored based on home and serve operator configuration as well as GTP messages and Information Elements mapped from GTP-C v1 to GTP-C v2 for 3G GSM to 4G LTE interoperability and GTP-C v2 to GTP-C v1 for 4G LTE to 3G GSM interoperability.

GTP firewall for 3G GSM, 4G LTE and interoperability between 3G and 4G signaling data

A Virtual Global Title Translation (V-GTT) Service implemented in a Signaling Connection Control Part (SCCP) Gateway using a single American National Standards Institute (ANSI) SS7 Point Code and a single International Telecommunications Union (ITU) SS7 Point Code for access to destination hubs on ITU and ANSI SS7 side of the SS7 network. The V-GTT enables ANSI SS7 and ITU SS7 operators to send their destination SS7 hub-specific traffic to a single hub-specific protocol for either the ANSI or ITU SS7 Point Code of V-GTT. The V-GTT Service application manages the traffic between ANSI/ITU SS7 operator and destination SS7 hub operators and performs ANSI SS7 to ITU SS7 (or ITU SS7 to ANSI SS7) protocol conversion if the destination hub is on a different SS7 protocol, thereby enabling an originating operator to send traffic to a single V-GTT Service hub-specific point code using the protocol that the originating operator currently employs.

System and method for Virtual Global Title Translation Service

A method of enabling a home network to identify a location of its subscriber roaming within a visited network. An Intelligent Data Routing (IDR) application functions as a proxy between a Serving GPRS Support Node (SGSN) of the visited network and a Gateway GPRS Support Node (GGSN) of the home network. The IDR receives a Create PDP Context Request message or an Update PDP Context Request message that is sent from the SGSN to GGSN. The IDR determines whether the Routing Area Identity (RAI) and User Location Information (ULI) Information Elements (IEs) of the Request message have been populated by the SGSN. If the IDR application determines that at least one of these IEs is absent, the IDR application populates them with appropriate values obtained from the SGSN. The routing application sends the modified Request message having the populated RAI and ULI IEs to the GGSN.

Growing community of inventors

Wesley Chapel, FL, United States of America

Karan Mehra