Voice Services


Campus Telephone Numbers

Main Campus – 216-687-2000

All Cleveland State University telephone numbers are 216 area code.

At Cleveland State University, there are five exchanges being used:

687, 523, 615, 802, 875

Cleveland State University has direct dial numbers and soft numbers. Soft numbers cannot be dialed directly from off campus.  To reach these numbers from an outside line, you will need to call 216-687-2000 and ask to be transferred to the extension number. Soft numbers are marked below with an asterisk *.

Cleveland State University telephone numbers on campus are as follows:

687-2000 to 687-2599
687-2000 x2600 * to 687-2000 x2999 *
802-3000 to 802-3399
687-3500 to 687-3999
687-2000 x4000 * to 687-2000 x4499 *
687-4500 to 687-4899
687-5000 to 687-5599
615-6200 to 615-6599
687-6870 to 687-6999
523-7100 to 523-7599
687-2000 X7900 * to 687-2000 x7999 *
687-2000 x9000 * to 687-2000 x9199 *
687-9200 to 687-9399
875-9600 to 875-9999

Dialing out from Cleveland State University Telephones

For Local Calls:

If calling a 216 area code: Dial 8 + 7 digit number (do not need to dial the 216)

If calling a 330 or 440 area code: Dial 8 + 1 + area code + 7 digit number

*Please note, some 330 and 440 are local; some are long distance

For Long Distance Calls:

Dial 8 + 1 + area code + 7 digit number

For International Calls:

Dial 8 + 011 + Country Code + City Code + Number

For Dialing Directory Assistance:

Dial 8 + 411

Note: Cleveland State University telephones are not all set up the same. Dialing features may be limited on some telephones, per department preferences.  Contact the Telecommunications Office at 216-687-3881 if you have any questions.

Campus Dialing

Interoffice (any CSU number) - dial the four-digit number

To transfer a call to another extension:

"Transfer" button

Dial extension number and wait for the party to answer

Announce the caller

Hang up, the transfer is complete

Evening Calls

Most University telephones are capable of receiving and placing interoffice and outside calls 24 hours a day.

When 216-687-2000 is not answered (between the hours of 5:00 p.m. to 8:00 a.m. weekdays and all weekend), you will hear a pre-recorded message, you also have the option of dialing by name after hours.  The message provides the University's open switchboard hours, refers callers to specific campus information centers, and when appropriate, advises whether classes will be held (due to emergency conditions and/or holiday situations).