Please note that some support information may refer to your legacy modem as a "3Com USRobotics" product if manufactured before the year 2000. Support information may no longer be available.



E-mail a Technician

If the support information in this section doesn't help you solve your problem, you can fill out a form to E-mail a Technician with questions regarding your product: 

Outside North America Products

All international support contact information can be found at USR International Contacts.

Business Class Products (Courier Modems & Gateways, Console Servers, Network Taps)

Support Phone: (888) 326-6099
Monday - Friday 9:00 a.m. - 6:00 p.m. CST.

Consumer Products

Support Phone: (888) 428-9450
Monday - Friday 9:00 a.m. - 6:00 p.m. CST.

Call Director Products Only (USR4000, USR4005, USR4009)

Support Phone: (877) 762-0132. 
Monday - Friday 7:00 a.m. - 4:00 p.m. CST. 
NOTE: This number does NOT offer support for modems, only USR4000 Call Director or USR4005/USR4009 Call Director Pro.

Warranty Service

To obtain Warranty Repair Service, you must first contact a Customer Service Representative using the appropriate Technical Support number corresponding to your product.


These are NOT technical support numbers.

General Pre-Sales Questions

If you have questions about products, pricing, or availability contact USR:
call Toll Free: (877) 710-0884 M-F 9 a.m. - 6 p.m. CST 
or e-mail using our online e-mail form.

Questions About Your Order?

If you have questions about an order placed through this Web site please call toll free: 800-356-2049 x 4600.