Telephone Services

     Dialing Instructions

     Available Phones

     Emergency Numbers
     Time Zone Conversion

BCO Resources


     Quick Reference Dialing Plan

   Quick Reference Telephone Guide

      Zulu to Guam Conversion


   Voicemail User Quick Start Guide

Telephone Directories

    Guam Navy Directory

    Guam Army Directory

    Guam Air Force Directory

    Guam DoD Misc. Directory

Base Level Communications

Department - N5/N9






BCO Information

*click the underlined titles for more information*


Organization and Functions - How are we organized internally to provide service, what are the functions of our individual organizational components.

Telephone Services - A description of the major services available from NCTS Guam's Base Communications Office.


Emergency Numbers - Quick reference to Emergency and other important local Navy, Air Force, and Civilian phone numbers.


Phone Instruments - Take a look at some of the various telephone instruments available from your Guam Navy BCO.  Features and pricing are provided along with pictures of the more popular models.


Callegra Voicemail Messaging - Quick reference to Callegra Voice Mail keypad information for configuring your Callegra Mailbox and Message options.


Time Zone Conversion Tables - Convert local times to Zulu or other time zones.  Both Standard Time and Daylight Savings tables available. 



Mission: To provide base level communications services to all Navy and other authorized users at all Navy Facilities on Guam.

Vision: To be the provider of choice when Navy facilities on Guam require base level and non-tactical communications & telecommunications services.  To provide equal or better quality service at equal or lower rates than the local commercial telephone company.



What is Base Level Communications and Base Level Information Infrastructure (BLII)?

Base level communications includes all of those facilities, equipment and services used to support the electromagnetic dissemination, transmission, or reception of information via voice, data, video, integrated telecommunications, wire or radio within the confines of a post, camp, station, base, headquarters, or Federal building. 

This includes local interconnect trunks to the first serving commercial office providing service to the local community and to other DOD facilities in the area. Per DOD Instruction 4640.14, BLII is the aggregate of the physical plant, equipment and facilities that are required to support base level communications at a specific location.



Download Our Communications Service Request Form


--   CSR Adobe PDF Format



Quick Reference Dialing Plan -  A downloadable, consolidated, two page document, containing all of the dialing and directory information you'll need to get started using Guam BCO telephones. 

--    Quick Reference Dialing Plan

NOTE:  If you are still having problems reaching a dialed destination, please call our local Guam Navy BCO Operators by dialing 0 (zero) or 355-1110.  Guam Air Force (Andersen, AFB) Operators can be reached at 366-1110.