In the field of telephony, quality of service was defined by the ITU in 1994. Quality of service comprises requirements on all the aspects of a connection, such as service response time, loss, signal-to-noise ratio, crosstalk, … See more

A number of attempts for layer 2 technologies that add QoS tags to the data have gained popularity in the past. Examples are See more

A defined quality of service may be desired or required for certain types of network traffic, for example:
• See more

End-to-end quality of service can require a method of coordinating resource allocation between one autonomous system and another. The Internet Engineering Task Force (IETF) defined the Resource Reservation Protocol (RSVP) for bandwidth … See more

In packet-switched networks, quality of service is affected by various factors, which can be divided into human and technical factors. Human factors include: stability of service … See more

Circuit switched networks, especially those intended for voice transmission, such as ATM or GSM, have QoS in the core protocol, resources are reserved at each step on the network … See more

Strong cryptography network protocols such as Secure Sockets Layer, I2P, and virtual private networks obscure the data transferred using them. As all electronic commerce on … See more