Subscriber Loop Carrier

Subscriber Loop Carrier

Subscriber Loop Carrier refers to equipment providing central office-like telephone interface functionality. The SLC RT is typically located in a remote (from the telephone company central office) area with a high density of telephone service such as a residential neighborhood. Two or four T1 circuits (depending on the configuration) connect the SLC Remote Terminal (RT) back to the Central Office Terminal (COT) in the case of a Universal Subscriber Loop Carrier (USLC). An Integrated Subscriber Loop Carrier (ISLC) has its T-spans terminating directly in time division switching equipment in the telephone exchange.

One system serves up to 96 customers. This configuration is more efficient than the alternative of having separate copper pairs between each service termination (house) and the central office. The term comes from the SLC-96 trademark of Western Electric.

A Subscriber Loop Carrier Circuit system manufactured by AT&T (now Lucent). SLC-96 has its own version of T1 frame synchronization between it and the CO. This interface is the Telcordia Technologies (formerly Bellcore) TR-008 or the newer GR-303 interface which are specialized versions of T1 intended to allow transparent transport of analog features such as Caller ID, Call Waiting, etc.

ee also

* Pair gain
* Distributed switching
* Digital loop carrier
* Telephone line
* Remote concentrator

References


Wikimedia Foundation. 2010.

Игры ⚽ Поможем написать реферат

Look at other dictionaries:

  • Digital loop carrier — A Telstra roadside cabinet housing a Remote Integrated Multiplexer (RIM)[1] and Customer Multiplexer (CMUX). A digital loop carrier (DLC) is a system which uses digital transmission to extend the range of th …   Wikipedia

  • Digital Access Carrier System — (DACS) is the name used by British Telecom (BT Group plc) in the United Kingdom for a 0+2 Pair gain system. Two Telspec DACS remote units mounted on a pole Contents 1 Usage …   Wikipedia

  • Carrier preselect — is a term relating to the telecommunications industry. It is the process where by a telephone subscriber whose telephone line is maintained by one company, usually a former monopoly provider (e.g. BT), can choose to have some of their calls… …   Wikipedia

  • Digital subscriber line — DSL redirects here. For other uses, see DSL (disambiguation). DSL technologies Standard ADSL ANSI T1.413 Issue 2 ITU G.992.1 (G.DMT) ITU G.992.2 (G.Lite) ADSL2 ITU G.992.3 ITU G.992.4 ITU G.992.3 Annex J ITU G.992.3 Annex L ADSL2+ …   Wikipedia

  • Local loop — In telephony, the local loop (also referred to as a subscriber line) is the physical link or circuit that connects from the demarcation point of the customer premises to the edge of the carrier or telecommunications service provider s network. At …   Wikipedia

  • Digital subscriber line access multiplexer — A Digital Subscriber Line Access Multiplexer (DSLAM, often pronounced dee slam ) allows telephone lines to make faster connections to the Internet. It is a network device, located in the telephony exchanges of the service providers, that connects …   Wikipedia

  • Digital Subscriber Line Access Multiplexer — Siemens DSLAM SURPASS hiX 5625 A Digital Subscriber Line Access Multiplexer (DSLAM, often pronounced dee slam) is a network device, located in the telephone exchanges of the telecommunications operators. It connects multiple customer Digital… …   Wikipedia

  • Digital Subscriber Line Access Multiplexer — Kabelverzweiger (links), Multifunktionsgehäuse mit Outdoor DSLAM (rechts) Ein Digital Subscriber Line Access Multiplexer (DSLAM) (deutsch: DSL Zugangskonzentrator) ist ein Teil der für den Betrieb von DSL benötigten Infrastruktur. DSLAMs stehen… …   Deutsch Wikipedia

  • Wireless local loop — WLL redirects here. Not to be confused with Weight Load Limit, the maximum weight that a given apparatus can bear Wireless local loop (WLL), is a term for the use of a wireless communications link as the last mile / first mile connection for… …   Wikipedia

  • ISDN Digital Subscriber Line — (IDSL) uses ISDN based technology to provide a data communication channel across existing copper telephone lines at a rate of 144 kbit/s, slightly higher than a bonded dual channel ISDN connection at 128kbit/s. The digital transmission bypasses… …   Wikipedia

Share the article and excerpts

Direct link
… Do a right-click on the link above
and select “Copy Link”