Certification and Accreditation

Performance Certification - PESQ

The commonly accepted speech quality test used in the telephony and GSM industries is the Perceptual Evaluation of Speech Quality Listening Quality test (PESQ-LQ). This test uses a standard International Telecommunications Union algorithm (ITU-T P.862.1) to measure the one-way, end-to-end speech quality of services over analogue, VoIP, and GSM networks. The derived measurements include a listening quality mean opinion score (PESQ-LQ MOS) and take into account various quality impairments, such as noise, clipping and frame muting.

The PESQ-MOS ranges from 1.0 (worst) to 5.0 (best), with GSM handheld mobiles typically scoring between 3.0 and 4.0. At Burnside, we have taken great care to design our products to minimise the factors that degrade speech quality: Burnside Crystal™ technology includes noise reduction and echo cancellation features. In addition, the external antennas that feature in our fixed cellular terminals and phones are capable of optimising GSM signal reception to provide the best available input. As a result of our innovative designs, Burnside products have been rated with a PESQ-MOS of 4.5, far exceeding typical mobile phone scores.

Environmental Regulations

All products designed and manufactured by Burnside Telecom comply with the Restriction of Hazardous Substances Directive (RoHS) 2002/95/EC. This directive restricts the use of six hazardous materials in the manufacture of various types of electronic and electrical equipment. It is closely linked with the Waste Electrical and Electronic Equipment Directive (WEEE) 2002/96/EC which sets collection, recycling and recovery targets for electrical goods.

5-10% of the world's electrical power is wasted by electronic products that operate in standby mode. In order to reduce one of the major causes of global warming, governments are now introducing directives to prohibit the purchase of devices consuming too much power in standby mode. A limit of 1 Watt is now commonplace. By the nature of Burnside's products, they have to be able to operate in standby mode. Our engineers have put great effort into producing designs that consume very small amounts of power. Burnside's terminals and phones consume only 50mW, or one twentieth of 1 Watt. Burnside products are available with internal backup batteries so are able to operate without mains power for long periods of time.