Barber's Notes ITS has been involved in performance measurements of telecommunication systems and is now moving to do performance measurements of Internet services. ITS has implemented measurements that have these attributes, but he did not bring their system today. ITS supports the NTIA and its telecommunications objectives. ITS has a number of products and has recently becoming involved with IETF under its mandate to work with standards bodies in implementing standards. At this time, ITS has started to be involved Internet performance issues.
Various impairments exist due to the use of digital codecs.
Video suffers with error-blocks, tilling, jerkiness and smearing. Audio can suffer from compression artifacts. Quality may be dependent on the information complexity of the source. In many cases, a specific test signal may not really provide a realistic test of things that users consider important. To address this, ITS has developed a perception-based measurement system.