UMD Telephone Dialing Procedures and Directories


In this article

University of Maryland, College Park exchanges (314-XXXX, 405-XXXX, 226-XXXX)

Dial the last five digits of the telephone number.

University 403 exchange (403-XXXX numbers)

Dial 9, and upon hearing the dial tone, dial the area code and the complete seven-digit number.

MD/DC/VA local calls

Dial 9. Upon hearing the dial tone, dial the area code (e.g. 301, 202, or 703) and the complete seven-digit number.

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Long distance calls

Dial 9. Upon hearing the dial tone, dial 1, then the area code and the desired seven-digit number.

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Toll-free calls

Dial 9. Upon hearing the dial tone, dial 1 followed by 800, 888, 866 or 877 and the desired seven-digit number.

International calls

Dial 9. Upon hearing the dial tone, dial 0 11 followed by the country code, the city code (if applicable), the complete phone number and end with a # (pound sign).

For International dialing codes, visit International Dialing Codes and Dial Rules

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Collect and third number

Dial 9. Upon hearing the dial tone, dial 0 for billed calls. The operator will then assist you with your call.

NOTE: University telephones do not accept collect or third number billed calls. 900 or 976 numbers cannot be reached from university telephones.

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Operator/directory-Assisted calls

  • Campus - Dial 0 or dial 301.405.1000
    There is no charge for this call.
  • Local - Dial 9-411
    Each call to the local operator costs $.40
  • Long Distance - Dial 9-(Area Code)-555-1212
    Each call to the long distance operator costs $.80
  • International Calls
    If you need assistance dial 9 + 0 + 0.

NOTE: AT&T gives procedural assistance and cannot place or connect a long distance campus call without the user having an AT&T calling card.

Calling card

Dial 9. Upon hearing the dial tone, dial 0, then the desired telephone number. Wait for the prompt, then dial your calling card number.

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Directories

Campus directories: Please contact University Advancement, University Communications Office at 301.405.4615 for copies of this directory.

Verizon directories: Please contact the Service Desk at 301.405.1000 or via e-mail (with the subject line Verizon Directories) to obtain copies of the specific directory you need.