Generic Requirements for Indoor Telephone Network Interface Devices (NIDs)
Document Number GR-239
Issue Number 01
Issue Date Oct 2003
Replaces TR-NWT-000239 Issue02
ABSTRACT: GR-239, replaces TR-NWT-000239, Issue 2, December 1993, but contains NO TECHNICAL CHANGES from that original document. It has been
issued strictly to conform with the new Telcordia Technologies document format and GR process, and carries a new issue number and date.
This GR presents the Telcordia view of the proposed generic requirements applicable to one-line, two-line, multiple-line, and
retrofit indoor telephone Network Interface Devices (NIDs). The NIDs should be compatible with a Telcordia Client Company's
telecommunications network and provide service capability consistent with typical Telcordia Client Company quality-of-service
objectives for telephone service.
The information in the criteria may be useful to anyone engaged in the manufacture of indoor telephone NIDs intended for connection
to Telcordia Client Company facilities and/or equipment and to anyone who may purchase, operate, or use such equipment. The criteria
and illustrative test circuits are used to analyze equipment with respect to the following:
- Compliance with Federal Communications Commission (FCC), Code of Federal Regulations, Title 47, Part 68, Subpart F, "Connection
of Terminating Equipment to the Telephone Network," Part 68, Subpart D, "Conditions for Registration", and Part 2, Subpart L,
"Registration of Telephone Terminal Equipment."
- Compatibility with Telcordia Client Company facilities
- Potential safety hazards
- Performance characteristics
- Susceptibility to failure under normal and abnormal environmental conditions.
These criteria attempt to characterize the indoor telephone NID to a Telcordia Client Company as completely and accurately as possible.
However, the electrical characteristics of the equipment and facilities used by a Telcordia Client Company to provide service in
certain locations may differ from the characteristics described herein, and facilities described may not be available in all locations.
Furthermore, conformance with all the specifications herein will not guarantee performance or compatibility in all cases. When cases
arise that have not been addressed in this document, the Telcordia Client Company and equipment manufacturer should cooperate to
resolve any resultant problems and discuss their decisions with a Telcordia representative.
When using GR-239-CORE, you may want to refer to GR-1361-CORE, GR-974-CORE, TR-NWT-001048, GR-324-CORE,
GR-1252-CORE, and IEC documents. You may also need to refer to GR-78-CORE, SR-NWT-2759, SR-332, GR-1089-CORE,
FCC Code of Federal Regulations, Electronic Industry Association documents, American National Standards Institute documents, American
Society for Testing and Materials documents, Underwriters Laboratories documents, and National Fire Protection Association
Components of this product are:
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