TABLE OF CONTENTS The services that GSM can provide include voice services, data services, messaging services, multicast services, and location services.
Voice service is a type of communication service where two or more people can transfer information in the voice frequency band (not necessarily voice signals) through a communication network. Voice service involves the setup of communication sessions between two (or more) users that allows for the real time (or near real time) transfer of voice type signals between users.
The GSM system provides for various types of digital voice services. The voice service quality on the GSM system can vary based on a variety of factors. The GSM system can dynamically change the voice quality because the GSM system can use several different types of speech compression. The service provider can select and control which speech compression process (voice coding) is used. The selection of voice coders that have higher levels of speech compression (higher compression results in less digital bits transmitted) allows the service provider to increase the number of customers it can provide service to with the tradeoff of providing lower quality audio signals. In addition to basic voice services, the GSM system is also capable of providing group voice services and broadcast voice services.
Full rate communication is the dedication of the full capacity of a communication channel to a specific user or application. GSM full rate service allows 8 users to share each radio channel with a voice data rate of 13 kbps...
