GTT performs In-Country Live Telephone Number & IVR (Interactive Voice Response) Platform Testing in 190 Countries. Our human assets test & verify that newly provisioned international telephone numbers and IVR Platforms are fully operational prior to delivery to customers, and also rapidly resolve international service tickets. GTT's testers make live, outbound originating test calls from their worldwide cities testing all PSTN (landline, mobile, and public telephone networks) access. Customer retention and time-to-revenue are directly impacted by GTT's testing.  GTT also performs mobile network testing, mobile apps & games testing, and Professional Services.

Global Telecom Testing LLC (formerly ETE Testing), was founded in 2007. GTT was created specifically to address the need that the Worldwide Telephony Industry and Corporate end-users have been facing the lack of a reliable local presence to In-Country Live-Test Worldwide Telephone Numbers . By providing Live Testing Worldwide, we enable our clients to establish a local presence and highly reliable Testing environment almost anywhere in the World.