Emergency Interruption of Service

TM 11-5895-1012-10

to a minimum, are known in advance and every effort

e. Interruption of User Service. For service inte

must be made to provide continuing service during the

ruption, other than a complete DCS Station, prior

time a facility is out of service. When it is absolutely

ordination and approval is not required on

necessary to remove communications equipment, facil-

releases of single circuits or single channel

ities, or an entire DCS Station from service, the plan-

concurrence has been obtained from

ning, notification, and restoral of service must be

terminals. However, if the interrup

thorough and complete.

magnitude, but less than the comple

a. Planning. Service interruption will normally be

nation and approval must be accomp

scheduled when minimum communications impact

tained in accordance with existing regula

will occur and will provide, where possible, for unin-

directives. Where the complete DCS Stat

terrupted service to users. Planned actions will be

volved coordination and approval is

time-phased to allow control to be maintained at all

ance with existing regulations and directives even

time, to ensure that communications capabilities will

though user concurrence has been obtained.

not be exceeded and to ensure the communications are

4-11. Emergency Interruption of Service

successfully completed. Planning will include recovery

should an emergency arise which would prevent the

completion of planned actions. In addition, the plan-

ning will consider leasing of additional circuits from

commercial carriers, as necessary, to provide uninter-

prior coordination. However, as soon as possible, the

rupted service.

circumstances involved will be reported to the various

b. Notification. It is of utmost importance that all

elements in accordance with existing regulations and

users of the DCS be informed of any action that will or

directives.

may tend to degrade their service.

4-12. Interruption of Service to Correct

c. Supervision. Control and implementation of a

Hazardous Conditions

scheduled service interruption rests with the TCF.

Supervising DOCC elements will ensure that depend-

able communications are maintained to the element

cation is waived for complete station interruption of

implementing the outage.

short duration to correct hazardous conditions provid-

d. No User Service Interruption.

ing all the following conditions are satisfied:

(1) When there will be no interruption of user

a The station is in a hazardous condition and the

service and sufficient spare or backup equipment is

condition has been reported in accordance with exist-

available during the affected period, no additional re-

ing regulations and directives.

b. All necessary equipment and the technical ex

sponsibilities, other than normal control practices, are

tise is available on-site to correct the hazardous co

required.

(2) When there will be no interruption of user

tion.

service and sufficient spare or backup equipment is

c. User concurrence for the outage has been ob-

not available during the affected period, the DCS sta-

tained.

d. The interruption is scheduled for non-busy hours.

tion will notify the appropriate DOCC and operation

and maintenance element of this hazardous condition.

e. Reroute or restoral actions will not be required

If necessary, the DOCC element may cancel or request

f. Appropriate DOCC elements have been contac

and advised that the above requirements have been

rescheduling of this type of interruption. Further, it

may be required that the users be notified of the exist-

met prior to the time of interruption occurs.

ing hazardous condition.

Section II. CIRCUIT REROUTING

4-13. Introduction

4-14. Normal Circuit Rerouting

All normal circuit rerouting requirements are deter-

Circuit rerouting is normally accomplished on a

mined by ACC or higher authority and are primarily

planned (scheduled) basis on orders from DCA or ACC.

based on satisfying customer demands or improving

System planning and growth, circuit priorities, link or

communication services in a particular area of the sys-

equipments reliability, subscriber population density,

tern. In the latter case

party line or command net configurations, and system

ment is the result of

maintenance may be major system operating factors

operating and service

which generate circuit rerouting requirements. In ad-

taken from the daily technical control and mainte-

dition, system or equipment failures may necessitate

nance logs and reports which are submitted by all

emergency circuit rerouting.

4-4