Terminology » Networking Basics » Voice Switch vs. Data Switch: Key Differences Explained

Voice Switch vs. Data Switch: Key Differences Explained

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This article explores the distinctions between voice switches and data switches, fundamental components in electronic exchanges that facilitate connections between input and output lines. Switches are designed and tailored for specific applications. We will delve into the characteristics of switches used for voice and data switching/routing.

Voice Switch

A voice switch is specifically designed to handle the switching of voice analog lines. It manages the connections and routing of traditional voice signals.

The following table provides a summary of the typical technical specifications of a voice switch used in a satellite hub station:

Voice switch specifications	Description
Capacity	36 ports, connectivity configuration as desired by user through software programming
Interface	32 ports on 4W E&M towards the Hub, 4 ports on A/A (-48V)
Traffic	Non-blocking switch
Signalling type	Decadic
Numbering	3 to 7 digits for local 32 VSATs on local numbering on a single route
Features	3-digit analysis for outgoing route, 2-digit insertion on Incoming side, 3-digit absorption on outgoing route, rotating priority on trunk allotment
Power input	-48V , 2A approx.

Data Switch

Conversely, a data switch is engineered to handle the switching of data digital lines. It manages the flow of digital information between different points on a network. The data lines can be based on various interfaces like RS232, RS485, or RS422.

The table below outlines the core technical specifications of a data switch often found in a satellite hub station:

Data switch specifications	Description
Ports	32 Async. RS 232C at a max. speed of 4.8Kbps including VSAT and user connections(4.8Kbps per line card having 4 ports); 64 Kbps sync. line with RS422 interface
Services	SVC/PVC protocol CCITT 1984, X.3/X.28
Flow Control	XON/XOFF, RTS/CTS
Link activate signals	DTR/DSR
Power supply	-48V DC