Digital Switching Systems Quiz

Digital Switching

• Digital signals are switched using time-division multiplexing (TDM)
• TDM combines multiple digital signals onto a single transmission medium
• The common media for TDM in digital switching systems is a high-speed digital bus
• Time slots are assigned to each call
• Each time slot represents a specific interval in the transmission cycle
• Calls are switched by directing the time slots to the appropriate destination
• The common name for a TDM digital switching system is a Time Division Multiplex (TDM) switch

Space Switching

• In a digital switch, space stages are used to switch calls between different time slots
• Enables flexible routing of calls between various inputs and outputs
• Provides connections between different time slots on the same digital bus
• Digital Space Switch is a key component for switching multiple calls simultaneously

Digital Space Switch

• The Digital Space Switch acts as a cross point matrix—a grid of electronic switches
• Each cross point is composed of a transistor or a gate
• Control memory manages the switch's behavior
• Control memory stores instructions for connecting specific inputs to outputs
• The Digital Space Switch allows the time slots to be routed to the appropriate destination

Time Switching vs. Space Switching

• Time switching works by rearranging the order of time slots
• Space switching physically connects the time slots through a cross-point matrix
• Both methods play a crucial role in routing calls in a digital switching system