90 lines
3.3 KiB
Plaintext
90 lines
3.3 KiB
Plaintext
Telco Equipment:
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A general overview of som of the equipment used by Telco.
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Analog subscriber carrier systems:
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Type: U1 Manufacturer: WECO
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A frequency modulated carrier telephone system that provides an additional
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single party telephone circuit over an existing physical one party line.
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Type: SLC1 Manufacturer: WECO
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A solid-state anolog carrier telephone system that provides an additional part
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telephone circuit over an existing physical one party line.
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Type: AML Manufacturer: RELIANCE TELCOM
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A single channel amplitude modulated carrier telephone system that provides
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an additional private line telephone circuit over an existing cable facility.
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Type: TH1A Manufacturer: SEISCOR
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A double sideband analog carrier system that provides 11 carrier derived
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circuits combined with 10 physical derived circuits or 21 VF circuits on
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11 pairs of non-loaded cable.
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Type: CM4 Manufacturer: RELIABLE
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A four channel solid state double sideband amplitude modulaed carrier
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system. It provides four cahaanels of single or multi party service over
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non-loaded cable facility. the physical circuit is usable to serve
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subscribers.
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Type: CM8 Manufacturer: RELIABLE
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A compandered, amplitude modulated system designed to provide eight
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channels over a single exchange grade cable pair. Each circuit is derived by
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analog carrier frequency technique utilizing standard carrier frequencies
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and levels. Options are provided to obtain single or multi party ringing
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and two party ANI service.
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Type: SSC5A Manufacturer: SEISCOR
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A five channel solid state double sideband amplitude modulated carrier
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system, that uses one unloaded cable pair. The physical circuit can not be
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used to supply suscriber telephone service on a meallic basis when being
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used as a carrier frequency transmission path and power feed for the SSC5A
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system.
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Type: S6A & S6B Manufacturer: ANACONDA
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Six channel and eight channel solid state double sideband amplitude
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modulated carrier systems that use one unloaded cable pair. The physical
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circuit can not be used to supply a subscriber telephone service on a
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metallic basis. The S6A system provides six channel or multi party subscriber
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lines. The S6B provides eight.
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DIGITAL SUBSCRIBER CARRIER SYSTEMS:
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TYPE: SLC40 Manufacturer: WECO
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Provides 40 full time speech channels between a central office terminal and a
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single remote terminal using a T1 type digital line over exchange grade
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non-loaded cable.
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Type: SLC96 Manufacturer: WECO
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A 96 line, digital subscriber carrier system that provides single
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party,muliti-party,coin and most of the D4 special services including DDS data
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port capability up to 56 KBS. The system uses 4 T! carrier lines; one for
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each 24 channels and a sepperate T1 line for automatic switching upon
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falier of any one of the four T1 lines in service.
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Type: ITT324S Manufacturer: I.T.T. Co.
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A 24 line, digital subscriber carrier system that provides single party,four
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party, and coin services using standard T1 lines.
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This will help enlighten you on the types of subscriber carrier systems in use
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today. These pieces of equipment are what is in use when you pick up your phone
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and open what is called a subscriber loop, they make the connection between the
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subscribers phone to the co.
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