Table 4-7. Sample cutsheet for 2-wire voice circuit (25 Hz signaling and echo suppressor control)

TM 11-5895-1012-10

Table 4-7. Sample cutsheet for 2-wire voice circuit (25 Hz signaling and echo suppressor control) - Continued

Section VIII. ACCEPTABILITY OF NEW EQUIPMENT

4-60. General

equipment.

(4) Supervise the testing of all circuits that re-

There is a need for continuing improvement in trans-

quire conditioning to ensure that the proper transmis-

mission quality. Therefore, integration of new equip

sion parameters are maintained.

ment into the DCS is accomplished in some areas of

b. Special attention must be given to protection of

the world every week. Technical and operational com-

service to users that have control, error detection, and

patibility is always an important consideration.

alarm devices on their circuits. Full coordination must

4-61. technical Control Facility Respon-

be made prior to any cut-over or testing to maintain

sibilities

operations without damage to communications equip

ment.

a. The Technical Control Facility chief will:

c. Where service must be interrupted for cut-over of

(1) Supervise an evaluation test of the equipment

new equipment, the established procedures must be

to be cutover before it is placed on-line for DCS traf-

followed. Cut-over plans will be submitted to the ap-

fic. This will include as a minimum, but not be limited

propriate DOCC in sufficient time to review and coor-

to, the following

dinate the plan.

(a) All quality control tests that are normally

performed on the subject item of equipment.

4-62. Test and Acceptance

(6) Back-to-back and looped tests will `be per-

Acceptability of new systems and subsystems usually

formed as appropriate.

require the services of test and acceptance (T&A)

(c) Preparation of quality control records for the

teams. In some cases, one terminal and sometimes

new equipment to include posting of all test informa-

both, may terminate in a facility where Technical Con-

tion. A copy of the initial tests will be provided the ap-

trol Facility personnel are not assigned, but where the

propriate DCA area or region.

facility is aligned as a system or subsystem reporting

(2) Coordinate with appropriate control offices

responsibility of a Technical Control Facility. In all

and other DCS Stations, as required, the addition of

cases it is imperative that personnel of that Technical

the new equipment into the system.

Control Facility be members of the T&A teams accept

(3) Supervise the cut-over of all circuits to the new

4-49