Comrex will be closed on Monday, July 4th, 2022 in observance of Independence Day. Tech support will not be available, and we encourage customers to reach out ASAP if assistance is required. We will reopen on Tuesday, July 5th, 2022 at 9AM Eastern Time (US & Canada) for normal business hours.


Contact information, product manuals, firmware updates and more.


Business Hours: M – F, 9 am – 5 pm EST 

Tel: 1-800-237-1776 (North America)

Tel: 1-978-784-1776 (International)

Tech Support:

Apoyo Tecnico en español:

Codec Test Lines

POTS: 1-978-784-1700

ISDN: 1-978-772-9404

Lab Voice:

Lab Music:

Want to Learn more?

Contact us