Gsm services

Gsm services

1. GSM - User Services Asst.Prof. Rupali Lohar Dept. of Computer Science & Engineering B. R. Harne College Of Engineering & Technology,   Karav, Post Vangani (W Tal Ambernath , Mumbai, Maharashtra 421503

2. GSM - User Services Telephony services or teleservices Data services or bearer services Supplementary services

3. Teleservices Voice Calls- This includes full-rate speech at 13 kbps and emergency calls. Short Text Messages-Short Messaging Service (SMS) service is a text messaging service that allows sending and receiving text messages on your GSM mobile phone.

4. Bearer service  In telecommunications,  Bearer Service  or data  service  is a  service  that allows transmission of information signals between network interfaces. These  services  give the subscriber the capacity required to transmit appropriate signals between certain access points, i.e. user network interfaces . Between two compatible terminals; From an access point of the PLMN to a system including high-level functions, for example, a server.

5. GSM is digital voice telephony, based on transmission of the digitally encoded voice over the radio. The voice service also includes emergency calls, for which the nearest emergency-service provider is notified by dialing three digits . Data services, with data rates ranging from 2.4 Kbps to 14.4 Kbps. Short message service (SMS), which is a bidirectional service for short alphanumeric (up to 160 bytes) messages . Access to a voice message service . Fax transmission.

6. teleservices cover the full seven layers of the OSI protocol layer model and are seen at the terminal equipment, while bearer services cover the lower three layers of the OSI model are seen at the interface between the network and the terminal equipment.

7. Supplementary services Call forwarding Call barring Conferencing Call hold (CH) Call Waiting

8. Supplementary Services Conferencing : A simultaneous conversation between three or more subscribers to setup a conference call. Call Waiting : This service notifies a mobile subscriber of an incoming call during a conversation. The subscriber can answer, reject, or ignore the incoming call. Call Hold : This service allows a subscriber to put an incoming call on hold and resume after a while. Call Forwarding : Call Forwarding is used to divert calls from the original recipient to another number. Call Barring : Call Barring is useful to restrict certain types of outgoing calls such as ISD or stop incoming calls from undesired numbers. Call barring is a flexible service that enables the subscriber to conditionally bar calls.

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