OTT Bypass

In telecommunications, OTT Bypass is a fraud variant where international voice calls are converted by a service provider into Over-The-Top traffic (such as messaging-app calls) and delivered to the destination without crossing the legitimate PSTN, bypassing termination fees.

Categories: FraudOperations and BusinessInternet and Routing

OTT Bypass in context

Telecom fraud costs operators an estimated $40+ billion per year. Common vectors include IRSF, Wangiri callback scams, SIM box bypass, PBX hacking and A2P grey routing.

OSS/BSS platforms hold the highest-value subscriber and revenue data on the operator side, are heavily targeted for fraud and insider abuse, and are in scope for NIS2 and the UK Telecoms Security Act.

To place OTT Bypass in the wider telecom-security picture, review AIT, SIM Box, Revenue Share Fraud, Traffic Pumping, Flash Call Fraud and PBX Dial-Through Fraud: each entry cross-references back to this page so you can walk the topic in either direction.

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