June  26,    19 
NUMBER    4640.6 
Department  of  Defense  Directive 
USD(P) 
SUBJECT:  Communications  Security  Telephone  Monitoring  and  Recording 
References:   (a)  DoD  Directive  4640.1,  "Telephone  Monitoring  and 
Recording,"  January  15,  1980 
(b)  through  (p),  see  enclosure  1 
A.  PURPOSE 
This  Directive  establishes  policy  and  procedures  for  the  com- 
munications security  (C0M3EC)  monitoring  and  recording  of  telephone 
communications . 
B.  APPLICABILITY 
1.  This  Directive  applies  to  the  Office  of  the  Secretary  of 
Defense  (OSD) ,  the  Military  Departments,  the  Organization  of  the 
Joint  Chiefs  of  Staff,  the  Unified  and  Specified  Commands,  and  the 
Defense  Agencies  (hereafter  referred  to  as  "DoD  Components"). 
2.  This  Directive  does  not  apply  to  signals  intelligence; 
administrative  telephone  monitoring  and  recording  (reference  (a)); 
interception  of  oral  and  wire  communications  for  law  enforcement 
purposes  (DoD  Directive  5200.24  (reference  (b));  technical  surveil- 
lance countermeasure  surveys  (DoD  Directive  5200.29  (reference  (c)); 
control  of  compromising  emanations  (DoD  Directive  S-5200.19  (refer- 
ence (d));  management  and  direction  of  COMSEC  activities  (DoD  Direc- 
tive C-5200.5  (reference  (e));  foreign  intelligence  and  counterintel- 
ligence activities  (DoD  5240. 1-R  (reference  (f));  Foreign  Intelligence 
Surveillance  Act  of  1978  (reference  (g));  and  telephone  monitoring 
during  wartime  or  under  combat  conditions  (DoD  Directive  5230.7 
(reference  (h)). 
C.  DEFINITIONS 
Terms  used  in  this  Directive  are  defined  in  enclosure  2. 
D.  POLICY 
1.  C0MSEC  telephone  monitoring  is  a  valuable  asset  of  the  U.S. 
Government  which  must  be  conducted  in  a  manner  that  satisfies  the 
legitimate  needs  of  the  government  and   protects  the  privacy  and 
civil  liberties  of  persons  whose  telephone  communications  are 
subject  to  such  monitoring.
2.  DoD-owned  or  leased  telephones  and  telephone  systems  are  provided 
for  the  transmission  of  official  government  communications  and  are  subject 
to  COMSEC  telephone  monitoring  in  accordance  with  this  Directive,  the 
National  Communications  Security  Directive  (reference  (i))  and  National 
COMSEC  Instruction  4000  (reference  (j)).  Use  of  official  DoD  telephones 
and  telephone  systems  constitutes  consent  by  the  user  to  COMSEC  telepone 
monitoring. 
3.  COMSEC  telephone  monitoring  provides  information  not  available  through 
other  sources  that  is  essential  for  evaluation  of  DoD  cojflmunications  security. 
4.  COMSEC  telephone  monitoring  is  undertaken  to: 
a.  Collect  operational  signals  to  measure  the  degree  of  security 
achieved  by  U.S.  codes,  cryptographic  equipment  and  devices,  COMSEC  tech- 
niques, and  related  measures; 
b.  Determine  the  information  and  intelligence  value  of  voice  communi- 
cations potentially  subject  to  interception; 
c.  Provide  an  empirical  basis  for  improving,  as  effectively  and 
efficiently  as  possible,  the  security  of  telephone  communications  against 
hostile  interception;  and 
d.  Assist  in  deVeropiug"  communications  profiles  for  cover  and  decep- 
tion measures.    
5.  COMSEC  telephone  monitoring  within  the  Department  of  Defense  shall  be 
conducted  only  by  elements  of  the  National  Security  Agency/Central  Security 
Service  (NSA/CSS)  and  the  Military  Departments  specifically  and  as  designated 
by  the  Director  of  NSA/Chief,  CSS,  and  the  Secretaries  of  the  Military  Depart- 
ments, respectively. 
E.   PROHIBITIONS 
1.  This  Directive  does  not  authorize  electronic  surveillance  of  telephone 
conmuni cat ions  for  law  enforcement  or  investigative  purposes,  and,  except  as 
provided  in  this  section,  the  information  obtained  from  COMSEC  telephone  moni- 
toring shall  not  be  used  for  law  enforcement  or  investigative  purposes. 
2.  The  sole  exception  to  this  policy  is  when,  incidental  to  the  COMSEC 
telephone  monitoring  authorized  by  this  Directive,  information  is  obtained 
which  requires  immediate  action  in  order  to  prevent  serious  bodily  harm  or 
significant  loss  of  property.  Such  information  may  be  referred  to  the  com- 
mander or  law  enforcement  agency  having  jurisdiction  over  the  incident.   In 
such  instances: 
a.  The  General  Counsel  of  the  DoD  Component  involved  shall  be  noti- 
fied promptly.
Jun  26,  81 
460.6 
b.  COMSEC  telephone  monitoring  of  the  telephone  circuit  concerned 
shall  cease.  No  attempt  to  investigate  further  or  to  obtain  specifically 
additional  information  of  criminal  activity  through  COMSEC  telephone  moni- 
toring will  occur.  Any  subsequent  electronic  surveillance  shall  be  conducted 
in  accordance  with  DoD  Directive  5200.24  (reference  (b))  or  DoD  5240. 1-R 
(reference  (f)),  as  appropriate. 
3.  This  prohibition  does  not  preclude  the  use   of  information  -obtained  as 
a  result  of  COMSEC  telephone  monitoring  in  connection  with  disciplinary  or 
administrative  action  against  DoD  military  or  civilian  personnel  for  knowing, 
willful,  or  negligent  actions  that  resulted  in  the  unauthorized  disclosure  of 
classified  information. 
4.  COMSEC  telephone  monitoring  or  the  results  of  COMSEC  telephone  moni- 
toring shall  not  be  used  to  enforce  the  DoD  policy  that  limits  use  of  DoD 
telephones  and  telephone  systems  to  conduct  of  official  business  only.  That 
policy  shall  be  enforced  through  administrative  and  management  techniques,  such 
as,  analysis  of  system-wide  records,  periodic  briefings,  and  supervisory 
controls. 
F.   PROCEDURES 
The  procedures  in  this  section  apply  to  all  COMSEC  telephone  monitoring  of 
official  DoD  telephones  in  DoD  Components. 
1.  Notice  and  Consent.  Users  of  official  DoD  telephones  and  telephone 
systems  shall  be  notified  that  discussion  of  classified  information  over 
nonsecure  circuits  is  prohibited,  official  DoD  telephones  and  telephone  systems 
are  subject  to  COMSEC  telephone  monitoring  at  all  times,  and  use  of  such 
telephones  and  telephone  systems  constitutes  consent  to  COMSEC  telephone 
monitoring. 
a.  The  following  notice  shall  be  displayed  prominently  on  the  cover 
of  all  official  DoD  telephone  directories: 
DO  NOT  DISCUSS  CLASSIFIED  INFORMATION  ON  NONSECURE 
TELEPHONES.   OFFICIAL  DOD  TELEPHONES  ARE  SUBJE* 
MONITORING  FOR  COMMUNICATIONS  SECURITY  PURPOSES  AT 
ALL  TIMES. 
DoD  telephones  are  provided  for  the  transmission  of 
official  government  information  only  and  are  subject 
to  communications  security  monitoring  at  all  times. 
Use  of  official  DoD  telephones  constitutes  consent 
to  communications  security  telephone  monitoring  in 
accordance  with  DoD  Directive  4640.6. 
b.  In  addition  to  the  telephone  directory  notice t  all  Heads  of  DoD 
Components  shall  ensure  that  users  of  official  DoD  telephones  and  telephone 
systems  subject  to  COMSEC  telephone  monitoring  receive  adequate  notice  that 
their  use  of  such  telephones  and  telephone  systems  constitutes  consent  to 
COMSEC  telephone  monitoring.  Such  other  forms  may  include,  but  need  not  be 
limited  to,  the  following:
4*« 
(1)  Decals  (DD  Form  2056)  attached  to  telephones  subject  to 
COMSEC  telephone  monitoring.   See  enclosure  3; 
(2)  A  notification  and  consent  form; 
(3)  Special  memoranda  from  responsible  senior  officials; 
(4)  Initial  briefing  of  new  personnel  and  periodic'  rebriefings; 
(5)  Periodic  notices  in  daily  bulletins  and  similar  publications; 
and 
(6)  Other  means  approved  by  the  General  Counsel  of  the  DoD  Com- 
ponent concerned. 
Kg  c.   The  General  Counsel  of  each  DoD  Component  shall  review  the  notifi- 
J\y   cation  given  to  users  of  the  Component's  official  DoD  telephones  and  telephone 
/\f\    systems  subject  to  COMSEC  telephone  monitoring  at  least  once  every  2  years, 
•  and  shall  state  in  writing  his  or  her  determination  of  the  adequacy  or  inade- 
quacy of  such  notification  to  include  the  reasons  supporting  that  determination 
If  notification  is  inadequate,  he  or  she  shall  require  implementation  of  those 
measures  necessary  to  make  notification  adequate. 
2.   Authorization  and  Request 
a.   COMSEC  telephone  monitoring  may  be  authorized  only  by  the  Secre- 
taries of  the  Military  Departments,  the  Director,  NSA/Chief,  CSS,  and  Com- 
manders of  Unified  or  Specified  Commands,  or  their  single  designees.   COMSEC 
telephone  monitoring  shall  be  authorized  only: 
(1)  In  DoD  Components  in  which  the  Component's  General  Counsel 
has  determined,  pursuant  to  paragraph  F.l.c.  of  this  Directive,  that  adequate 
notification  exists; 
(2)  When  it  will  aid  in  protecting  the  national  security; 
(3)  When  it  will  be  an  effective  and  efficient  use  of  COMSEC 
resources.   This  determination  shall  be  made  in  consultation  with  the  opera- 
tional COMSEC  elements  designated  pursuant  to  paragraph  F.3.a.,  below;  and 
(4)  For  a  reasonable  period  of  time  not  to  exceed  1  year. 
b.  Heads  of  DoD  Components  other  than  the  Military  Departments, 
Unified  and  Specified  Commands,  and  NSA/CSS  shall  submit  requests  for  COMSEC 
telephone  monitoring  to  the  Director,  NSA/Chief,  CSS,  in  accordance  with 
regulations  of  the  NSA/CSS. 
c.  COMSEC  telephone  monitoring  within  OSD  and  the  Defense  Telephone 
Service-Washington  is  prohibited  except  with  the  written  approval  of  the  Deputy 
Under  Secretary  of  Defense  for  Policy,  or  a  designee.
Jun  26,  81 
4640.6 
3.  Monitoring  Procedures 
a.  COMSEC  telephone  monitorin£within^Xhe  Department  of  Defense  shall 
be  conducted  only  by  elements  of  NSA/CSSana~the  Military  Departments,  specifi- 
cally designated  respectively  by  the  Director  of  NSA/CSS  and  the  Secretaries 
of  the  Military  Departments. 
b.  COMSEC  telephone  monitoring  of  telephone  line^^iLhijj^che  Depart- 
ment of  Defense  shall  be  conducted  only  from  points  within  the  facilities  or 
installations  of  DoD  Components  by  bridging  the  telephone  lines  at  points 
prior  to  the  point  of  association,  in  a  main  distribution  frame,  between 
official  DoD  telephones  lines  and  outside  lines. 
c.  COMSEC  telephone  monitoring  of  radio,  microwave,  and  other  free 
space  official  telephone  communications  shall  not  be  conducted,  except  for 
those  official  telephone  communications  that  are  transmitted  over  systems 
dedicated  solely  to  government  use  and  that  are  sent  and  received  by  trans- 
mission and  reception  facilities  dedicated  solely  to  government  use. 
4.  Acquisition,  Retention,  and  Storage  Procedures.  The  following  proce- 
dures apply  to  the  acquisition,  retention,  and  storage  of  information  respect- 
ing telephone  conversations  acquired  in  the  course  of  COMSEC  telephone  moni- 
toring or  produced  in  the  course  of  analyzing  such  information. 
a.  COMSEC  telephone  monitoring  shall  be  conducted  in  a  manner  that 
minimizes,  to  the  fullest  extent  possible y  consistent  with  operational  require- 
ments, the  recording  of  communications  not  relevant  to  the  COMSEC  telephone 
monitoring  mission. 
b.  If  practical,  information  extraneous  to  the  COMSEC  telephone 
monitoring  mission  shall  be  expunged  from  recordings  u   j  recognition.   Any 
such  information  present  on  recordings,  to  include  the  identities  of  individual 
conversants,  will  not  be  transcribed  or  otherwise  used  unless  required  in 
support  of  actions  identified  in  subsections  E.2.  and  E.3. 
c.  All  transcripts,  notes,  logs,  and  other  written  working  materials 
produced  in  the  course  of  COMSEC  telephone  monitoring  or  in  the  course  of 
analyzing  communications  acquired  through  COMSEC  telephone  monitoring  shall  be 
reviewed  within  a  reasonable  period  after  the  production  of  such  written 
material  to  assure  that  information  not  relevant  of  COMSEC  purposes  inadver- 
tently included  has  been  expunged.  Material  retained  shall  be  annotated  to 
include  the  name  of  the  person  who  conducted  the  review  and  the  date  of  the 
review. 
d.  Except  as  provided  below,  all  recordings,  transcripts,  notes,  logs, 
and  any  other  written  working  materials  containing  information  acquired  in  ' 
connection  with  COMSEC  telephone  monitoring  shall  be  erased  or  destroyed  upon 
the  issuance  of  a  final  report  based  upon  those  records  or  within  i  year, 
whichever  is  earlier.
e.  Recordings  and  written  working  materials  say  be  retained  beyond 
1  year  of  the  issuance  of  a  final  report,  only  if  such  retention  is  necessary 
for  the  COMSEC  Mission  and  is  first  approved  by  officials  designated  by  the 
Director,  NSA/Chief,  CSS,  for  that  Agency,  or  by  the  Secretaries  of  the  Mili- 
tary Departments  for  their  respective  Departments. 
(1)  Prior  to  approving  extended  retention,  the  approving  officials 
shall  determine  whether  the  material  to  be  retained  has  been  adequately  re- 
viewed for  identification  and  erpunction  of  all  information  not  relevant  to 
COMSEC  purposes.  The  officials  shall  provide  for  additional  review  of  the 
terial,  if  not  satisfied  that  adequate  review  has  occurred. 
(2)  Approval  of  extended  retention  shall  be  in  writing  and  shall 
stipulate  the  period  of  time  for  which  the  recordings  or  written  working 
materials  say  be  retained. 
(3)  Upon  the  expiration  of  the  extended  retention  period,  the 
recordings  or  written  materials  shall  be  erased  or  destroyed.  No  informa- 
tion shall  be  retained  in  any  form,,  including  recordings,  written  working 
materials,,  or  computerized  data  banks,  after  the  extended  retention  period 
has  expired. 
(4}  This  paragraph  does  not  apply  to  final  reports  resulting  from 
h  COtiSEC   telephone  monitoring  operation. 
f.  Final  reports  or  evaluations  resulting  from  a  COMSEC  telephone 
monitoring  operation: 
(1)  Will  be  retained  in  accordance  with  established  record 
retention  procedures; 
(2)  Shall  not  contain: 
(a)  Any  information  extraneous  to  COMSEC  purposes; 
(b)  Accounts  or  summaries  of  particular  telephone  conversa- 
tions monitored,  except  for  descriptions  of  information  that  may  be  classified 
or  national  security-related  discussed  in  such  conversations  and  information 
necesoary  to  understand  the  nature  of  and  ways  in  which  classified  information 
may  have  been  compromised;  or 
(c)  Sufficient  data  to  identify  individuals  who  participated 
in  monitored  telephone  conversations. 
(3)  Shall  have  an  access  clause  prominently  displayed  at  the 
beginning  of  the  report  stating  that  the  information  in  the  report  shall  be  ' 
used  only  for  official  U.S.  Government  COMSEC  purposes. 
g.  To  the  extent  consistent  with  E.0-  12065  and  DoB  5200. 2-R  (refer- 
ences (k)  and  (1)),  all  recordings  and  written  working  material  containing 
information  acquired  through  COMSEC  telephone  monitoring  shall  be  afforded 
protection  at  least  equal  to  chat  provided  material  officially  classified 
CONFIDEOTIAL.
Jun  26,  81 
4640.6 
h.  Except  as  provided  in  subsection  F.5.  of  this  Directive,  access  to 
any  recordings,  written  working  materials,  or  computerized  data  banks  containing 
information  acquired  through  COMSEC  telephone  monitoring  shall  be  limited  to 
individuals  in  the  DoD  Components  designated,  pursuant  to  F.3.a.  of  this 
Directive  and  assigned  to  COMSEC  duties  requiring  such  access.  Recordings, 
written  working  materials,  and  computerized  data  banks  shall  be  stored  and 
maintained  in  a  manner  that  will  assure  enforcement  of  these  access  restric- 
tions. 
5.  Dissemination  Procedures 
a.  Information  respecting  telephone  conversations  acquired  through 
COMSEC  telephone  monitoring  shall  be  disseminated  outside  the  Department  of 
Defense  only  in  the  following  circumstances: 
(1)  For  purposes  permitted  by  subsections  E.l.  through  E.3.  of 
this  Directive; 
(2)  Pursuant  to  the  provisions  of  DoD  5200. 1-R  (reference  (1)); 
and 
(3)  When  required  by  a  court  order  and  approved  by  the  General 
Counsel  of  the  Department  of  Defense. 
b.  Information  acquired  by  COMSEC  telephone  monitoring  under  this 
Directive  shall  be  disseminated  within  or  outside  of  the  Department  of  Defense 
only  as  necessary  for  purposes  of  COMSEC  operation  and  management  or  as  pro- 
vided for  in  subsections  E.l.  through  E.  3.  of  this  Directive.   No  information 
shall  be  disseminated  within  or  outside  of  the  Department  or  outside  the  opera- 
tional COMSEC  elements  designated  pursuant  to  paragraph  F.3.a.  of  this  Directive, 
unless  the  reviews  required  by  paragraphs  F.4.b.  and  c.  of  this  directive  have 
been  conducted. 
6.   Safeguarding  Monitoring  Equipment.   Telephone  monitoring  and  recording 
equipment  shall  be  safeguarded  to  prevent  unauthorized  access. 
a.  To  the  extent  consistent  with  operational  requirements,  equipment 
not  in  use  shall  be  kept  in  secure  and  controlled  storage. 
b.  Each  element  of  the  Military  Departments  and  NSA/CSS  authorized  to 
conduct  COMSEC  telephone  monitoring  under  paragraph  F.3.?.  of  this  Directive 
shall  maintain  records  showing  its  inventory  of  COMSEC  telephone  monitoring 
equipment,  the  time  at  which  each  item  of  equipment  was  withdrawn  from  and 
returned  to  storage,  the  location  and  use  of  each  item  of  equipment  currently 
in  use,  and  the  person  or  persons  in  charge  of  the  operation  for  which  the  ' 
equipment  is  being  used. 
c.  Only  those  persons  assigned  to  COMSEC  duties  with  an  element 
designated  pursuant  to  paragraph  F.3.a.  of  this  Directive,  shall  have  access 
to  monitoring  equipment  in  use.
7.  COMSEC  Telephone  Monitoring  Outside  DoD 
a.  COMSEC  telephone  monitoring  by  DoD  personnel  of  official  govern- 
ment telephone  communications  outside  the  Department  of  Defense  is  prohibited 
except  upon  written  authorization  of  the: 
(1)  Deputy  Under  Secretary  of  Defense  for  Policy,  whenever  the 
COMSEC  telephone  monitoring  is  to  be  conducted  by  an  element  of  one  of  the 
Military  Departments. 
(2)  Director,  NSA/Chief,  CSS,  whenever  the  COMSEC  telephone 
monitoring  is  to  be  conducted  by  that  Agency. 
b.  Only  the  elements  of  NSA/CSS  and  the  Military  Departments  specifi- 
cally designated  to  conduct  COMSEC  telephone  monitoring  within  the  Department 
of  Defense  shall  conduct  COMSEC  telephone  monitoring  outside  the  Department. 
c.  COMSEC  telephone  monitoring  operations  outside  the  Department  of 
Defense  shall  be  subject  to  restrictions  respecting  notice  to  telephone  users, 
acquisition,  retention,  and  dissemination  of  information  and  safeguarding  of 
monitoring  equipment  equivalent  to  the  restrictions  imposed  by  this  Directive 
upon  such  activities  within  the  Department  of  Defense. 
G.   INFORMATION  REQUIREMENTS  AND  RESPONSIBILITIES 
1.  The  Deputy  Under  Secretary  of  Defense  for  Policy  or  designee  shall 
review  and  provide  overall  policy  guidance  for  the  COMSEC  telephone  monitoring 
program  and  review  and  act  upon  requests  for  COMSEC  telephone  monitoring  in 
accordance  with  paragraphs  F.2.c.  and  F.7.a.(l)  of  this  Directive. 
2.  The  Director,  NSA/Chief,  CSS,  and  the  Secretaries  of  the  Military 
Departments  shall  supervise  and  issue  directives  to  govern  all  COMSEC  tele- 
phone operations  and  ensure  that  all  such  operations  comply  with  this  Directive 
The  Director  and  Secretaries  shall  each  designate  one  official  in  their  respec- 
tive Agency  or  Department  as  the  official  with  responsibility  for  oversight  of 
COMSEC  telephone  monitoring  to  ensure  compliance  with  the  provisions  of  this 
Directive. 
3.  The  Head  of  each  DoD  Component  shall: 
a.  Authorize  or  request  COMSEC  telephone  monitoring  in  accordance 
with  the  provisions  of  this  Directive  and  relevant  regulations  of  the  Military 
Departments  and  NSA/CSS;  and 
b.  Cooperate  with  the  Director,  NSA/Chief,  CSS,  the  Secretaries  of 
the  Military  Departments,  the  General  Counsels  of  the  DoD  Components,  and 
their  designees,  to  ensure  that  the  COMSEC  telephone  monitoring  conducted  - 
within  the  Components  is  effective  and  complies  with  this  Directive. 
4.  All  records  of  information  obtained  through  COMSEC  telephone  moni- 
toring and  associated  analysis  shall  be  maintained  and  disseminated  in  accord- 
ance with  subsections  F.4.  and  F.5.  of  this  Directive  and  with  the  provisions 
of  DoD  Directives  5400.7  and  5400.11  (references  (m)  and  (n)).
Jun  26,  81 
4640.6 
5.  DoD  Components  shall  report  to  the  Deputy  Under  Secretary  of  Defense 
for  Policy,  through  the  General  Counsels  and  Inspector  Generals  of  the  moni- 
toring Component  and  the  Component  being  monitored,  within  5  days  after  dis- 
covery all  telephone  monitoring  and  recording  activities  conducted  in  viola- 
tion of  the  provisions  of  this  Directive.  .  * 
a.   These  reports  shall  contain,  at  a  minimum,  the  following  items: 
(1)  Nature  of  the  violation,  such  as,  unauthorized  COMSEC  moni- 
toring: 
occurred; 
*(2)  Date  of  violation  o-currence; 
(3)  Time  of  violation  occurrence; 
*(4)   Location  (name  of  installation/activity)  where  the  violation 
*(5)   Individual  (last  name,  first,  M.I.)  or  Component  responsible 
for  the  infraction; 
(6)  Brief  summary  of  the  incident; 
(7)  Corrective  action  taken;  and 
(8)  Current  status  of  the  inquiry. 
b.  This  reporting  requirement  has  been  assigned  Report  Control  Symbol 
DD-POL(AR)  1564.  Existing  standard  data  elements  from  DoD   5000. 12-M  (reference 
(o))  are  being  used  in  this  reporting  requirement.   Any  new  data  elements  will 
be  registered  with  the  Director  for  Management  Information  Control  and  Analysis, 
Office  of  the  Assistant  Secretary  of  Defense  (Comproller) .   Data  elements  marked 
with  an  asterisk  have  been  registered  in  the  DoD  Data  Element  Program. 
c.  Upon  receipt  of  these  reports,  the  Deputy  Under  Secretary  of 
Defense  for  Policy  and  the  Inspector  Generals  and  General  Counsels  of  the 
DoD  Components  involved  shall  work  together  to  ensure  that  all  appropriate 
action  is  taken  to  correct  and  prevent  such  violations. 
H.   EFFECTIVE  DATE  AND  IMPLEMENTATION 
This  Directive  is  effective  immediately.   Forward  two  copies  of  imple- 
menting documents  to  the  Deputy  Under  Secretary  of  Defense  for  Policy  within 
120  days. 
Carlucci 
Deputy  Secretary  of  Defense 
Enclosures  -  3 
1 .  References 
2.  Definitions 
3.  Decal
Jun  26,  81 
4640.6  (End  1) 
REFERENCES,  continued 
(b)  DoD  Directive  5200.24,  "Interception  of  Wire  and  Oral  Communications  for 
Law  Enforcement  Purposes,"  April  3,  1978 
(c)  DoD  Directive  5200.29,  "DoD  Technical-Surveillance  Countenneasures  (TSCM) 
Survey  Program,"  February  12,  10j£ 
(d)  DoD  Directive  S-5200.19,  "Control  of  Compromising  Emanations,"  February  10. 
1968  .        3 
(e)  DoITTJirective  C-5200.5,  "Communications  Security  (COMSEC),"  April  13,  1971 
(f)  DoD  5240. ]-R,  "Procedures  Governing  the  Activities  of  DoD  Intelligence  ""S* 
Components  that  Affect  United  States  Persons,"  November  1979,  authorized 
.  by  DoD  Directive  5240.1,  November  30,  1£70,  — ^    1 
(g)  Foreign  Intelligence  Surveillance  Act  of  1978,  Public  Law  No.  95-511 
(h)  DoD  Directive  5230.7,  "Wartime  Information  Security  Program  (WISP)," 
June  25,  19£5_ 
(i)  National  Communications  Security  Directive,  June  20,  1^23 
(j)  National  COMSEC  Instruction  (NACSI)  4000,  "Guidelines  for  the  Conduct 
of  Communications  Security  Survey  Activities,"  January  23,  lflgQ. 
(k)  Executive  Order  12065,  "National  Security  Information,"  July  3,  1978 
(1)  DoD  5200. 1-R,  "Information  Security  Program  Regulation,"  October  I960, 
authorized  by  DoD  Directive  5200.1,  November  29,  1978 
(m)  DoD  Directive  5400.7,  "DoD  Freedom  of  Information  A^cf  Program  "  March  24, 
1980 
(n)  DofTTTirective  5400.11,  "Personal  Privacy  and  Rights  of  Individuals 
Regarding  Their  Personal  Records,"  August  4,  1975 
(o)  DoD  5  000.12-M,  "DoD  Manual  for  Standard  Data  Elements,"  June  30,  1980, 
authorized  by  DoD  Instruction  5000.12,  April  27,  196J 
(p)  DoD  Directive  5160.9,  "Defense  Telephone  Service-Washington  (DTS-W)," 
March  22,  1973
Jun  26,   81 
4640.6    (Encl   2) 
DEFINITIONS 
l-       Communications  Security  (COMSEC) .   Protective  measures  taken  to  deny 
unauthorized  persons  information  derived  from  telecoMnunicatioas  of  the  U.S. 
Government  related  to  national  security  and  to  ensure  the  authenticity  of  such 
communications.   Such  protection  results  from  the  application -of  security 
measures  (including  cryptosecurity,  transmission  security,  emissions  security, 
and  jamming  resistance)  to  telecommunications  and  to  electrical  systems  generat- 
ing, handling,  processing,  or  using  national  security  or  national  security-related 
information.   It  also  includes  the  application  of  physical  security  measures 
to  COMSEC  information  or  materials. 
2-  COMSEC  Surveillance.   The  systematic  examination  of  telecommunications  to 
determine  the  adequacy  of  COMSEC  measures,  to  identify  COMSEC  deficiencies,  to 
provide  data  from  which  to  predict  the  effectiveness  of  proposed  COMSEC  measures, 
and  to  confirm  the  adequacy  of  such  measures  after  implementation. 
3-  COMSEC  Telephone  Monitoring.   Listening  to,  copying,  or  recording  by  any 
means  the  content  of  official  telephone  communications  to  provide  material 
for  analysis  to  determine  the  degree  of  security  being  provided  to  those 
communications.   COMSEC  telephone  monitoring  is  one  of  the  techniques  of 
COMSEC  surveillance. 
4.   Consent.   The  agreement  by  a  person  to  permit  DoD  communications  security 
components  to  monitor  the  person's  official  telephone  communications.   Consent 
may  be  oral,  written,  or  implied.   Consent  may  be  implied  if  adequate  notice  is 
provided  that  use  of  official  government  telephones  carries  with  it  the  pre- 
sumption of  consent. 
5-  Defense  Telephone  Service-Washington  (DTS-W) .   An  organizational  entity 
under  the  Secretary  of  the .Army  that  has  been  assigned  responsibility  pur- 
suant to  DoD  Directive  5160.9  (reference  (p))  to  provide  administrative 
telephone  communications,  including  AUT0V0N  services,  to  DoD  elements  located 
in  the  National  Capital  Region  (NCR).   The  NCR  includes  the  District  of  Columbia, 
Montgomery  and  Prince  George's  Counties  in  Maryland,  Arlington,  Fairfax, 
Loudoun,  and  Prince  William  Counties  in  Virginia,  and  the  cities  of  Alexandria, 
Fairfax,  and  Falls  Church  in  Virginia. 
6-  Main  Distribution  Frame.   A  distribution  frame,  on  one  part  of  which 
terminates  the  permanent  outside  lines  entering  the  central  telephone  and 
communication  facility  and  on  the  other  part  of  whi*-?i  terminates  the  subscriber 
line  multiple  cabling.   The  main  distribution  frame  is  used  for  associating 
any  outside  line  with  any  desired  terminal  in  such  a  multiple  or  with  any 
other  outside  lines. 
7-  Official  DoD  Telephones  and  Telephone  Systems.  Telephones  or  telephone 
systems  owned  or  leased  by  the  U.S.  Government  and  used  for  official  business 
purposes  of  the  U.S.  Government,  including  the  purposes  of  command  and  control 
of  the  armed  forces.   Official  DoD  telephones  do  not  include  pay  telephones, 
telephones  that  are  routinely  used  by  the  press,  and  telephones  that  i  :e  located 
in  individual  or  family  residences  and  intended  for  private  use,  even  when  the 
U.S.  Government  owns  such  residences.
8.   Official  Telephone  Coamunications .  Telephone  conmnications  in  which  one 
or  aore  of  the  parties  to  the  coamunications  uses  an  official  DoD  telephone.
Jun  26,    81 
4640.6 (End  3) 
DECAL 
DO  NOT  DISCUSS  CLASSIFIED  INFORMATION 
THIS  TELEPHONE  IS  SUBJECT  TO  MONITORING  AT 
ALL  TIMES.  USE  OF  THIS  TELEPHONE  CONSTITUTES 
CONSENT  TO  MONITORING