Given the competitive environment, communications providers use several routes, networks of several providers to arrange communications. For example, Spain can be provided by 5 transit providers, with different rates.
The providers continuously try to find a balance between quality and price.
Very often, the provider finds out that a direction does not function when a subscriber complains, or ASD or ASR indicators are beyond the range.
In the event of a “breakdown” of the route due to a late notification, the provider loses about 5% of the revenue from international traffic from its subscribers.
Providers now use a manual voice quality check and often rely on the personal characteristics of audibility in the channel.
Very often, there are situations when a transit provider “mixes up” low-quality routes to make more money, and it is quite hard to identify the point of time when packets deteriorate, or number A is replaced.
Providers cannot provide proper conditions and monitor the implementation of the terms of the agreements by transit providers, in terms of number A translation, voice quality, and availability.

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7 Mar 2018

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