Telecom

USSD – Unstructured Supplementary Service Data Flow

USSD – Unstructured Supplementary Service Data Flow USSD is an acronym of Unstructured Supplementary Service Data. We are normally use the code *123# to check our balance in mobile. The code starting with * and ending with # symbol is called MMI Code. MMI – Man Machine Interface. Also we use …

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Telecom Tutorials Basic Terms Functions and Flows

Telecom Tutorials Basic Terms Functions and Flows Dear Friends, The main goal of this page is to provide Telecom Tutorials, Telecom Basic Terms and its Functions and Flows. We believe that this tutorial is help to improve beginners knowledge and common peoples basic telecom knowledge. Telecom GSM Update Location Flow Two …

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Two main segments of 4G LTE Network

Two main segments of 4G LTE Network 1. LTE EUTRAN 2. LTE Evolved Packet Core (EPC) The above two segments are major part of 4G LTE Network. Here we going to see detaily about  LTE EUTRAN and LTE Evolved Packet Core (EPC). 1. LTE EUTRAN e-UTRA is the air interface of …

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4G/LTE Related Network Components and Acronyms

Dear Friends, Welcome to the our new tutorial – 4G/LTE Related Network Components and Acronyms. Here i have given Components involved in 4G/LTE. 4G – 4th Generation LTE – Long Term Evolution SGW – Serving Gateway PGW – Packet Gateway (PDN Gateway – Packet data network Gateway) eNodeB – The evolved …

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Roaming MT Call Flow

Hi Winmeeners, Here i am going to explain about Roaming MT Call Flow. Roaming MT Call Flow is nothing but, when user is in roaming how he is receiving calls. Now we are going to see both MT (Mobile terminated) call flow and Roaming MT call flow. MT Call Flow: A and …

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Basics of Diameter Protocol

Basics of Diameter Protocol: Diameter is a Authentication Authorization and Accounting (AAA) protocol. It works on the Application Layer if we consider OSI Layered model. Example of AAA protocol:- Any User trying to access a Network (Ex: Internet Service Provider) has to undergo “AAA” procedure that is being implemented by …

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Main functional parts of GSM network?

Main functional parts of GSM network : MSC – Mobile switching centre is the core switching entity in GSM network. The MSC is connected to the radio access network (RAN); the RAN is formed by the BSCs and BTSs within the Public Land Mobile Network (PLMN). Users of the GSM network …

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IN Call flow with single ACR

When we making call, It reaches MSC, Then MSC sends IAM (Initial Address Message) to SWITCH. Switch sends IDP to SCP. This IDP contains A party number, B party number, Serving Location Details. SCP will check A party number, B party number, Serving Location Details and sends initial request to RRBS. …

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What are the information contained in IDP?

IDP – Initial Detection Point contains A party number, B party number, MSC Number, Call type (MO call or MT call), Service Key, Camel version and IMSI Details (A Party). The gsmSSF sends CAP IDP to the gsmSCF to start a CAMEL service. The sending of CAP IDP results from …

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What is Sub System Number – SSN?

Signalling Connection Control Part (SCCP) sub system numbers are used to identify applications within network entities which use SCCP signalling. Sub System Number is a number which is assign to every entities and it is used to communicate between own entities. Entities in the GSM network have a subsystem number …

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