The CELUImpacto operator, with branches in Chile, Argentina, Brazil, Colombia and Mexico, needs to improve the quality of the services offered, because it has recently presented various failures associated with the coding and data transmission processes, resulting in countless complaints. by users, which means that they must make refunds for services not provided or delivered, translated at the accounting level as financial losses and a decrease in the number of subscribed clients. The complaints describe some inconveniences associated with the fact that the network traffic exceeds the available bandwidth, generating low latency in video calls, voice cuts and interference and variations in the transmission delay of telephone calls, in addition to a lack of knowledge of the codec. and required algorithms. Keeping in mind that codecs are used to compress, encode and transform analog voice to digital, according to the techniques used, which allow generating VoIP conversations. Due to the above, General Management has requested the operations area to issue a report related to the elements that may affect the quality of the service and risk factors.

 

 

1. According to the complaints related to voice quality on data networks presented by the company, what protocols are recommended to allow telephone calls between branches, with the objective of detecting errors associated with the factors that affect the voice quality?

 

 2. Considering the capacity of the company's data network does not exceed 5 Mbps and that there are complaints related to the loss of data bits and packets between branches, producing degradations in voice quality, what factors can Affect voice quality in phone calls? 

 

3. Based on the claims about the service and the audio signal processing techniques to model the voice signal, what encoding is recommended to solve QoS problems in telephone calls between all the company's branches?