With the introduction of A-Z call termination services, the communication structures have become better and more organized. The big or not-so-big business entities or corporate houses are opting for these services to experience the joy of making local, national and international calls at reasonable rates. The high speed internet networks or packet switching techniques help to resolve the quality related issues. As a matter of fact, the voice quality delivered over the internet telephony services are far more impressive than pre-existing PSTN services. The users can enjoy hassle free communication with others- especially if services are obtained from well known VoIP providers.

Nowadays, more and more business entities are switching over to call termination services with the basic motive of cutting down on their calling costs. A survey says that business houses have successfully cut down on their monthly telephone bills by approximately 60 percent by using these services. Therefore, by spending less on the longer distance as well as international calls, the users can enjoy seamless connectivity at cheap rates.

The call termination or voice termination refers to routing of the telephone calls from one telephone exchange to the other. The terminating point is called end point, while the originating point is the place from where the call is initiated. It simply means providing a route or path through which 'unified' communication can be transmitted over the internet.

For availing these services, the users require high-speed broadband connection. The high-speed network connection is a primary requirement for accessing the A-Z call termination services. This is because it will facilitate the 'proper' termination of unified communication. As a matter of fact, with the quality wholesale a-z termination services, the users can transmit voice, video and images with ease. The quality of service or QoS can be verified from the parameters such as voice quality, interoperability and latency.

Some facts on the quality of services that need to be considered while opting for the A-Z wholesale services are average call duration or ACD, average success ratio or ASR and post duration delay or PDD. The quality is calculated on the basis of these measurable parameters, for instance, average call duration of 5 to 6 minutes is more than sufficient as far as users' satisfaction is considered. An average success ratio of 60 per cent and post duration delay of 3 to 4 seconds is also considered as essential in satisfying the customers. Considering these parameters, most providers in this domain ensures that QoS is not affected with other features.

To conclude, it can be said that A to Z VoIP termination and related features have helped the business houses to gain enhancement in the productivity and internal operations by spending less on the telephone bills.