Maser provides a range of Media Gateways (MGs), Media Gateway Controllers, signalling gateways and protocol converters for Telecommunication providers. Our VoIP field test solutions allow customers to test voice quality (QoS and MOS) and call set up procedures for VoIP and traditional PSTN and POTS calls in the field. Our field test units also provide the operator to assess call quality what end customer experience is actually like. We offer lab and field equipment for testing converged voice applications. Our solutions enable customers to test voice quality, call degradation as well as conformance and verification of protocol and signalling messages.