Point-to-point (telecommunications)
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In
The term is also used in
Point-to-point is sometimes abbreviated as P2P. This usage of P2P is distinct from P2P meaning peer-to-peer in the context of file sharing networks or other data-sharing protocols between peers.
Basic data link
A traditional point-to-point data link is a communications medium with exactly two endpoints and no data or
When connected at a distance, each endpoint would be fitted with a
Modern links
With the exception of
Networking
In a
From the OSI model's layer perspective, both switches and repeater hubs provide point-to-point connections on the physical layer. However, on the data link layer, a repeater hub provides point-to-multipoint connectivity – each frame is forwarded to all nodes – while a switch provides virtual point-to-point connections – each unicast frame is only forwarded to the destination node.
Within many switched telecommunications systems, it is possible to establish a permanent circuit. One example might be a telephone in the lobby of a public building, which is programmed to ring only the number of a telephone dispatcher. "Nailing down" a switched connection saves the cost of running a physical circuit between the two points. The resources in such a connection can be released when no longer needed, for example, a television circuit from a parade route back to the studio.
See also
Notes
- ^ The Telecommunications Industry Association's engineering committees develop U.S. standards for point-to-point communications and related cellular tower structures.[1] Online tools help users find if they have such line of sight.[2]
References
- ^ "TR-14 | Structural Standards for Communication and Small Wind Turbine Support Structures". Telecommunications Industry Association. Archived from the original on 2014-01-07. Retrieved 2011-11-20.
- ^ "PtP Estimator Overview". AlphiMAX. Retrieved August 29, 2011.