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FUNCTIONS AND ACTIVITIES
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Important functions of T&D Circle can widely be classified as follows:

1) Acceptance and Testing(A/T) of Switching Systems more than 2K capacity.

2) Acceptance and Testing(A/T) of Transmission Systems more than 8 mbps capacity.

3) Issue of Engineering Instructions

4) Power & Telecom Co-ordination Committee

5) Publishing TELECOMMUNICATIONS journal.

6) Investigation of fire cases.

7) Sample check of installations done & Acceptance and Testing(A/Ted) by Territorial Telecom Circles.

8) Providing Webbased Acceptance Testing Offer Managment System(ATOMS) for Territorial Circles and Corporate Offices.

This circle has been playing an important role in the introduction of new Telecom systems and technologies by participating in validation of equipments/ systems and participation in various working groups for preparation of technical specifications

A/T OF SWITCHING SYSTEMS:

Acceptance testing is carried out for all types of Electronic Exchanges like E10B, C--DOT MAX, EWSD, NEAX--61E, AXE--10, OCB- 283, FETEX-150 NIB, ISDN, WLL, IMPCS etc.

A/T OF TRANSMISSION SYSTEMS

Long distance Transmission systems which form the back-bone of National Trunk Network consisting of Microwave, Satellite, Optical >Fibre Cable are also subjected to rigorous Acceptance testing to ensure reliable and trouble free NSD & ISD facilities and Data transmission. All the transmission systems installed by Telecom Projects at Mumbai,Chennai,>Kolkata and New Delhi and also by Task Force at >Guahati are A/Ted by this unit.

ISSUE OF ENGINEERING INSTRUCTIONS

T & D Circle issues Engineering instructions on different topics for use by the field units of the Department. In the current year 2003-04 , 14 new >EIs were finalized covering latest switching and transmission systems for the benefit and use of the field staff of theDepartment.

POWER & TELECOM CO-ORDINATION COMMITTEE

In order to ensure safety of Telecom assets & personnel and interference free working of Telecom >systems,Telecom Co-ordination Committee (PTCC) has been set-up in the year 1949. The main function of PTCC is to examine all new cases of power and telecom lines and cables and recommend protection measures in order to ensure safe and satisfactory working of Telecom systems. Major co-ordination problems in the field are settled in PTCC meeting being held regularly at Central, State and Divisional state levels. At central level, policy matters are decided and guidelines issued so also the unsettled cases at state level are discussed and settled.

During the year 2003-04 , 261 Power and 54 Telecom Central PTCC cases involving about 6930.38 and 643.527 respectivley route kms and 113 Power State level cases were approved by PTCC.

PUBLISHING TELECOMMUNICATIONS JOURNAL:

T & D Circle is publishing a technical journal titled TELECOMMUNICATIONS since 1951. The journal is being published on a bimonthly basis. The Journal has entered into 54th year of publication. The circulation of the journal is around 7000 copies and quite popular in the telecom sector.

INVESTIGATION OF FIRE CASES:

T & D Circle is playing important role in investigation of fire incidences in Telecom installations.

 
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