USUHS

INCOMING AND OUTGOING CONUS DEFENSE SWITCHED NETWORK (DSN)

Incoming

DSN

Lines with 295 prefix …………………………………………………………………………………………………………………295-XXXX

Lines with 319 prefix …………………………………………………………………………………………………………………319-XXXX

Lines with 400 prefix …………………………………………………………………………………………………………………400-XXXX

Lines with 299 prefix ........................................................................................Not available at the moment

Outgoing

Lines with 295 prefix .…………………………………………………………………………………………………………94+XXX-XXXX

Lines with 319 prefix ………………………………………………………………………………………………………….94+XXX-XXXX

Lines with 400 prefix ………………………………………………………………………………………………………….94+XXX-XXXX

Lines with 299 prefix ...............................................................................................................94+XXX-XXXX

OUTGOING OCONUS DEFENSE SWITCHED NETWORK (DSN)

Alaska ………………………………………………………………………………………………………………………………..94+317-XXXX

Caribbean …………………………………………………………………………………………………………………………..94+313-XXXX

Pacific …………………………………………………………………………………………………………………………………94+315-XXXX

Canada ……………………………………………………………………………………………………………………………….94+310-XXXX

Europe...……………………………………..………………………………………………………………………………………94+314-XXXX

Southeast Asia ……………………………………………………………………………………………………………………94+318-XXXX

OFFICIAL LONG DISTANCE CALLS

Outgoing ………………………………………………………………………………………………………………88+1+XXX+XXX+XXXX

Incoming …………………………………………………………………………………………………………………………..301-295-XXXX

…………………………………………………………………………………………………………………………..301-319-XXXX

……………………………………………………………………………………………………………………………301-400-XXXX

……………………………………………………………………………………………………………………………210-299-XXXX

INTERNATIONAL DIRECT DIAL LONG DISTANCE DIALING

88+011 (access code) + country code + city code + phone number

LOCAL DIALING INSTRUCTIONS

Calls placed within the NNMC compound …………………………………………………………………295-XXXX

…………………………………………………………………………………………………………………….319-XXXX

…………………………………………………………………………………………………………………….400-XXXX

…………………………………………………………………………………………………………………….299-XXXX

OUTSIDE LOCAL CALLS PLACED WITHIN THE WASHINGTON METROLOLITAN AREA

………………………………………………………………………………………………………88+XXX+XXX+XXXX

OUTSIDE LOCAL CALLS PLACED WITHIN THE SAN ANTONIO AREA

……………………………………………………………………………………………………88+1+XXX+XXX+XXXX

METROPOLITAN AREA CODES

Maryland……………………………………………………………………………………………………….240/301/410/443

Virginia……………………………………………………………………………………………276/434/571/703/575/804

Washington, DC …………………………………………………………………………………………………………………..202

San Antonio......................................................................................................................210/830

NOTE: All DoD agencies within the NCR, except Andrews Air Force Base, can be dialed direct. DO NOT dial 88 first. The following prefixes are within the NCR and can be dialed using only the 7-digit telephone number.

227 231 264 275 279 285 295 319 325 326 356 394

400 404 428 433 541 545 588 601 602 504 607 610 614 617 669 681 685 692 693 695 696 697 699 704 706 735 757 761 762 764 767 781 782 805 806 810 882 907

PERSONAL LONG DISTANCE CALLS (DOD INSTRUCTION 5335.1, PARA B2)

• • Personal long distance calls cannot be charged to government lines.

  • A personal long distance call may be made from a government telephone in an emergency situation, or when determined in the best interest of the government, and only if no charges incur to the government.

  • A personal credit card call may be direct dialed from government telephone lines with long distance capability. To place a personal credit card call, you must first know your long distance carrier’s direct dial access code. To reach the long distance network, the user must dial as follows: 99+10+10+XXX+0+area code+phone number. At the tone, enter your personal credit card number. You will be billed directly by your long distance carrier for calls placed via your personal credit card.

• Collect calls cannot be accepted on government telephones.

Walter Reed

Dialing Instructions:

. Internal Calls....................7 Digit Extension

. Tempo Calls...................93+7 Digit Number

The "93" prefix applies to:

1. Numbers not connected to our switch but within the DOD National

Capital Region, e.g. FT Belvoir, Pentagon, NAVFAC, Navy Yard etc., and,

2. Unconverted numbers within the hospital. If your phone has been

converted but your call destination has not, dial "93" before the seven

digit number.

. DSN Calls......................94+7 Digit Number

Calls to USUHS and even NAVFAC on the second floor in building 27 or other

DOD installations in the National Capital Region are considered TEMPO calls

since they are not on WRNMMCB telephone network.