Comrex will be closed on Thursday, November 26 and Friday, November 27 for the Thanksgiving holiday. Tech support will not be available during this time. Please contact tech support in advance if you require assistance by calling 1-978-784-1776 or emailing techies@comrex.com. Comrex will reopen on Monday, November 30 at 9AM ET. Click to read the following changes in operation due to COVID-19.

Matrix

Manuals

Matrix TelCell Manual Matrix Manual Matrix GSM Manual Matrix ISDN Manual

Technotes

Coding Delay in Digital Audio Codecs Technical Explanation of Comrex Turbo G.722 ISDN Codec Compatibility Ordering ISDN Lines GSM Discontinuation in U.S. POTS Modems vs IP Telephony POTS Over ISDN Matrix / Bluebox Firmware Updates Modem Line Checklist POTS vs ISDN Making the Transition from ISDN to IP POTS Basics Fixing Bad POTS Lines Using a POTS Codec on a Dry Pair