CSG Assure Voice Quality Testing

According to a recent telecom market survey, the three most common wholesale business priorities for operators are pricing, service quality, and cost.

There’s a good reason these are the top priorities: changes in voice calling markets and networks have exposed many carriers to revenue loss and deteriorating quality in their international voice business. Poor call quality compromises the customer experience, and revenue is often delayed or lost through inter-carrier disputes.

Poor voice quality is a common problem (especially for international calls), due to the different network technologies and topologies a call traverses. It isn’t possible to test the end user’s quality experience with live traffic analysis; it only captures signaling parameters, not the actual voice data stream. With CSG Assure, you can now verify the end-to-end caller experience by measuring the “mean opinion score” (MOS).

MOS, a well-known ITU standard, is expressed as a value in a range from one to five, where one is the lowest perceived audio quality and five is the highest.

The expansive CSG Assure test number directory—covering both fixed and mobile networks—lets you test the voice quality of all your products, your terminating suppliers, and any potential suppliers you may consider, using the Codec you selected.

Test calls are made from your network to either an interactive voice response system (IVR) or one of 450 test nodes in over 150 countries. The Assure Voice Quality system listens to the voice recording and uses a sophisticated algorithm (based on ITU recommendations) to calculate the MOS, noise level, speech level, and other relevant voice quality measurements like jitter or packet loss. In addition, it is possible to test MOS both ways to ensure the incoming leg has the expected call quality.

• Automatically verify the voice quality of your premium service level

• Assess end customer perception of call speech quality

• Identify routes with superior cost/voice quality ratio

• Take full control of interactive and scheduled calls

CSG Assure Voice Quality Testing helps mobile operators and carriers measure, demonstrate and improve voice quality across networks and destinations worldwide.

Powered by the Assure Global Test Network, CSG Assure provides reliable testing results that help you identify quality issues, strengthen partner relationships, and compete on service quality—not just cost.

Why CSG Assure Voice Quality Testing?

• Fast one-week implementation so you can begin testing quickly

• Test number directory covering 150 countries for comprehensive global reach

• Used by more than 150 carriers and operators globally

• Proprietary global test network covering more than 450 mobile networks

• Cloud-based SaaS delivery with no capital expenditure or significant operational overhead

With CSG Assure, you can access fast, actionable voice quality insights and confidently demonstrate the performance of your network to customers, partners and carriers around the world.