The delivery of video services is far more complex than that of pure
voice or data. Dilithium engineers and technical experts have been
involved in broad range of standard and technology development in the
audio/video compression and multimedia communication areas since the
early 1990s. Today’s Dilithium products and solutions are underpinned
by many of these technologies, either in a unique offering or as part
of the standards.

Different telecommunication networks today utilize different
audio/voice codecs. The variation is due to the different conditions
(bit-rates, delays, error recovery/concealments, etc…) that govern a
particular network. Within an industry (e.g. mobile/cellular) different
codecs may also be dominant or mandated, as is the case in GSM/WCDMA
and CDMA/CDMA-2000 networks. Another example of variation is between
broadband VoIP codecs (e.g. the ITU-T G.72X series) and the
mobile-oriented voice codecs.

The variations of audio/voice codecs used across networks
necessitate transcoding because of bit-rates restrictions and the
complexity involved in terminals supporting codecs of other networks.
For example WCMDA handsets do not/cannot support G.72X series of codecs.