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Skip Navigation LinksHome / FAQ / Telecom Industry Standard Terms

TELECOM SPECIFIC Industry Terms and Definitions

The following definitions are provided as a minimum guideline to ensure a measure of uniformity and credibility to the Secondary Market.  They are primarily intended to be used as a reference by which both buyer and seller can come to an understanding and agreement as to the condition and content of what is ordered and what is shipped.







Common Equipment

All equipment required for basic initialization of a specific PBX/CBX, KSU, or Hybrid system.  Depending on OEM may or may not include software.


Key Service Unit (KSU)

A small cabinet which contains all the switching electronics of a business key telephone system.


Hybrid Key System

A key system which has some of the attributes of both a key telephone system and a PBX.


Depot Repair Facility

A repair facility to which equipment is shipped "out of house" for repair and return.  The user or on site maintenance personnel may perform the shipping to the Depot Repair Facility.


Advance Replacement, where offered (Warranty)

Equipment covered under the supplier's warranty replaced in advance of receiving the malfunctioning equipment back from the customer.  This service is applicable only when the supplier has the equipment available, and may incur a supplemental charge.


Peripheral Equipment

Equipment not integral to, but working with a telephone system.


Designation Cards and/or Strips

Used to mark phone numbers, internal intercom numbers, etc., on telephone sets and/or consoles.


Hand Set

The part of the telephone held in the hand with which to speak and listen.


Power Supply

That part of the phone which converts the normal 120 or 240 volts AC power to AC and DC at the various voltages and frequencies as needed by the components and circuits of a system.


Mounting Hardware

Any and all hardware necessary to mount a KSU, Telephone Set, etc., on a wall or shelf.


User Guides

A booklet, brochure or form detailing pertinent user information for a Telephone Set, Console, etc.


Packaging should be adequate to protect the equipment for shipping by common carrier of choice.


Otherwise Specified

Any other parameters outside these definitions and/or NATD Standards at time of sale, contract or "done deal".





A quality system patterned and implemented from a commonly recognized and accepted method.  Does not require documented evidence of operation.



Same as above except that documented evidence of operation is required.


Documented and Registered

This means that the quality system chosen is recognized and approved by a Registrar, and upon formal verification of documented quality system, a registration certificate is granted.  An example of this is ISO 9000.


Technical Support

Technical assistance provided over the telephone or, in certain instances, on site to an Interconnect or End User. There may or may not be a service charge if and when this service is provided.


Refund Policy

Refunds may be granted at the discretion of the supplier and supplier's policies.  Generally there is a 10% to 20% restocking fee, plus all shipping and handling charges on returns unless previous arrangements have been made.



Private Branch Exchange.  A switch used inside a private business (opposed to one serving the general public).  Various manufacturers have different names for these such as: PABX, CBX, EPABX, etc.






The equipment listed below in bold print will normally include (as shipped by the original equipment manufacturer and where applicable) the items appearing after "to include," unless otherwise specified by the seller.


Telephone Set/Console

To include:  Hand Set, Hand Set Cord, Mounting Cord and Stand, Designation Strips, Power Supply as specified by OEM part number.


Key Service Unit (KSU)


Expansion Cabinet

- To include:  Power Cord, Common Equipment (Circuit packs as configured and shipped by manufacturer), Power supply, Door/Cover.


Hybrid Systems

To include:  Common Equipment (Circuit Packs as configured and shipped by manufacturer), Power Supply(s), Connector Cable.


PBX Systems

To include:  Common Equipment (Circuit Packs as configured and shipped by manufacturer), Power Supply(s), Connector Cable as specified by OEM part number.


Circuit Packs/Boards

To include:  As configured and shipped by manufacturer.


Power Supply

To include: Common Equipment, Power Cord, Mounting Hardware.


Peripheral Equipment

To include:  Common Equipment, Cords, Mounting Hardware and as shipped by manufacturer.


Voice Mail

To include:  Common Equipment, Cords, Mounting Hardware and as shipped by manufacturer.







Term signifying successful completion of installation and placement into service at the customer site.



The shutoff and disconnect of machine power and the disassembly of a PBX switch to prepare for its removal from a switch room facility.  A properly executed deinstallation will include all necessary parts for the reassembly, operation and maintenance acceptance of the switch and ay of its components at the next location.



O.E.M. prescribed test procedure whose successful completion is normally required for maintenance acceptance of a switch, cabinet, or peripheral piece of equipment.


Flash or Hot

CutSame as "Cutover" but is done while existing equipment is in operation and down time is reduced to a minimum.



- The physical hook-up and diagnostic testing of a PBX switch, cabinet, or peripheral item prior to a cutover and maintenance acceptance by the maintaining vendor.


Maintenance Contract

- Contract guaranteeing the repair of a PBX switch to support it at operational levels for a predetermined fixed term and fixed price.


Moves, Changes, Additions

Any of the above ancillary work performed on a PBX switch or peripheral item after installation.


Work Order

- Internal document used by a remarketer specifying    Work to be performed;  Machine or item on which work is to be performed;  Required completion date; cost of work; and  Customer purchase order and/or other pertinent billing information.

A work order is implemented by a remarketer, once a written request has been received authorizing the work to be performed.






Done Deal

Term used between seller and buyer to signify that a sale has been agreed to and an oral contract is now in effect, binding both parties to the agreed-to-sale as if a written contract had been signed.  A written contract submitted later that does not conform to the original oral contract is not justification for dissolving the original oral agreement unless both parties agree to the new written contract.


Like New

Excellent condition.  Under normal conditions could pass as new; i.e., not used, but not necessarily in the O.E.M. packaging.


Out of Service/Used

Equipment taken from service.  Expected to work and be complete.


Refurbished/Recycled (Cosmetic only)

Enhancing the cosmetic appearance by using on or more of the following processes:


a.                  Cleaning the plastic

b.                  Buffing the plastic

c.                  Painting the plastic

d.                  Supplying new plastic



Equipment is repaired to original working condition, but does not include refurbishment or recycling process except where required to bring equipment to working condition.



The relinquishing of a piece of equipment to a purchaser/user upon fulfillment or anticipated fulfillment of contractual obligations, whether written or oral.



Span of time that equipment will be repaired or replaced due to failure.  Does not include reimbursement of engineer's fees required for replacement.  May not include equipment failure due to abuse or destruction by either intentional or unintentional means.

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