Contact Us

24 x 7 x 365 Customer Support

Emergency assistance: Please call our office immediately at 443-577-2224. Do not use the ‘Online Service Request’ form.

Non-emergency support: Click here to submit your Online Service Request.

Sales & General Inquiries

CTS makes it easy for you to visit our headquarters in Millersville, Maryland. Below you’ll find directions for reaching our location by car from Baltimore or Annapolis as well as our contact information.

(410) 850-4848  Baltimore
(301) 621-1213  DC
(800) 787-4848  Toll Free

EMAIL click here

(410) 850-0001    Fax

CTS (formerly Chesapeake Telephone Systems)
8225A Cloverleaf Drive
Millersville, MD 21108


For driving directions, click on the marker in the interactive map below.