Element of switching system
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The document discusses the key elements of a switching system. A switching system establishes communication paths between distant points by receiving control signals and messages and forwarding them to their destinations. It uses either circuit switching for telephone networks or packet switching for computer communication. The main elements of a switching system include trunk interfaces, subscriber line interfaces, service circuit interfaces, a controller, operator console, subscriber and distributor units, trunk circuit scanners and distributor units, and junctors. A block diagram shows how these elements are connected within the switching network.
Element of switching system
- 1. RUNGTA COLLEGE OF ENGINEERING & TECHNOLOGY PREPARED BY: PRERNA SHARMA
- 2. SWITCHING SYSTEM: The switching centers receives the control signals, messages and forwards to the required destination. A switching system is a collection of switching elements arranged in a way to setup a communication path between any two distant points
- 3. In computer communication, the switching technique used is known as packet switching In telephone network the switching method used is called circuit switching
- 4. Elements of switching system: Elements include: i. Trunk interface ii. Subscriber line interface iii. Service circuit interface iv. Controller v. Operator console vi. Subscriber service line & distributor unit vii. Trunk circuit scanning & distributor unit viii. Junctor
- 5. BLOCK DIAGRAM FOR ELEMENT OF SWITCHING SYSTEM
- 6. INCOMING OUTGOING TRUNK INTERFACE TRUNK INTERFACE J SUBSCRIBER LINE SUBSCRIBER LINE INTERFACE SWITCHING INTERFACE U NETWORK N SERVICE CIRCUIT SERVICE CIRCUIT C INTERFACE INTERFACE T O R SUBSCRIBER CONTROLLER TRUNK & SERVICE LINE CIRCUIT SCANNING & SCANNING & DISTRIBUTOR OPERATOR CONSOLE DISTRIBUTOR UNIT UNIT
- 7. Trunk: A trunk is a line or link designed to handle many signals simultaneously. It often consists of multiple wires Junctors : In a telephone junction box, a small section of twisted wire pair that is used to attach incoming lines with outgoing lines. Subscriber circuit interface: It alerts the central office system that user wishes to make a call. Transmitt number to be called and convert signal to digital form.
- 8. Thank you