Serving area interface: Difference between revisions
Yamaguchi先生 (talk | contribs) m Reverted edits by 2600:387:6:803:0:0:0:92 (talk) to last version by Omnipaedista |
m →Alternate names: - PCP actually stands for "Primary cross-connection point", as per BT and Openreach. |
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*'''Outside plant interface''' ('''OPI''') |
*'''Outside plant interface''' ('''OPI''') |
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*'''Pedestal''' ('''ped''') |
*'''Pedestal''' ('''ped''') |
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*'''Primary connection point''' ('''PCP''') (UK)<ref name="Whyte">"Multimedia Telecommunications" (BT Telecommunications Series), B. Whyte (Ed.), Springer 1997</ref> |
*'''Primary cross-connection point''' ('''PCP''') (UK)<ref name="Whyte">"Multimedia Telecommunications" (BT Telecommunications Series), B. Whyte (Ed.), Springer 1997</ref> |
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*'''Secondary connection point''' ('''SCP''') (UK)<ref name="Whyte"/> |
*'''Secondary connection point''' ('''SCP''') (UK)<ref name="Whyte"/> |
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*'''Telecom cabinet''' |
*'''Telecom cabinet''' |
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Revision as of 09:43, 23 May 2019
 | This article needs additional citations for verification. (April 2014) |
The serving area interface or service area interface (SAI) is an outdoor enclosure or metal box that allows access to telecommunications wiring.
Alternate names
- Access point (AP)
- Cabinet (cab)
- B-box (breakout box)
- Cross box
- Cross-connect box
- Jumper wire interface (JWI)
- Outside plant interface (OPI)
- Pedestal (ped)
- Primary cross-connection point (PCP) (UK)[1]
- Secondary connection point (SCP) (UK)[1]
- Telecom cabinet
Function
The SAI provides the termination of individual twisted pairs of a telephony local loop for onward connection back to the nearest telephone exchange (US: "central office" (CO)) or remote switch, or first to transmission equipment such as a subscriber loop carrier multiplexer and then to the exchange main distribution frame (MDF).
In the United Kingdom, the components from the PCP onwards to the customer are known as "D-side" (distribution side), and from the PCP back to the MDF as the "E-side" (exchange side). In the United States, the connection back to the MDF is known as the F2 (secondary distribution cable) and/or the F1 (main feeder cable) pairs.
SAIs are used in suburban and low-density urban areas, serving some of the same purposes that manholes do in high-density urban areas. Besides a cross connect point, they sometimes contain a DSLAM or more rarely a remote concentrator or both.
See also
References
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