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Tech Notes

ACCESS Tech Notes

General Info

Internet Remotes by the Codec Answer Guy (PDF)

Primer: IP Audio Coding & BRIC Technology (PDF)

Comparison Chart of ACCESS algorithms (PDF)

White Paper: BRIC Technology (PDF)


WarDriving BRIC

Traveling with ACCESS: USDOT Regulations

Wired Services & Networking

Using Broadband Boosters with ACCESS (PDF)

Connecting ACCESS Rack to a laptop (PDF)

Una introducción al Windows Internet Connection Sharing y cómo usarlo con el codec ACCESS de Comrex (PDF) (Spanish translation of above)

3G Wireless Data Services

Primer: 3G Wireless Data Services

3G Card Status -- A list of tested and approved devices for use with ACCESS

Satellite Data Services

ACCESS with Inmarsat BGAN system diagram (PDF)

INMARSAT User Guide: Using Comrex ACCESS Over BGAN (PDF)

Tech Note: Immarsat BGAN terminals and ACCESS

Matrix GSM Wireless Tech Notes

GSM Information
GSM Discontinuation in the United States


POTS Tech Notes

POTS vs ISDN & Some Tips for Both
Modem Line Checklist
Phone Line Basics
Tips for Correcting Bad Phone Lines
Using ISDN to Increase POTS Codec Performance
Ask the Codec Answer Guy
Note to POTS Codec Users About Business Phone Systems

ISDN Tech Notes

POTS vs ISDN & Some Tips for Both
How to Order ISDN Lines
Ask the Codec Answer Guy
Nexus and Envoy Setup Hints
Coding Delay in ISDN Codecs
Setting up the Adtran ISU128 TA with Comrex Products
Two Broadcasts on One ISDN Line

ISDN via Satellite - Portable Terminals have Come a Long Way

STAC Tech Notes

Connecting an External Hybrid
Creating a Production-News Extension to the Comrex STAC System

Cue Equipment Tech Notes

CTA and Interference 
How to Order CTA/LPQRA/CRA Crystals
Antenna for Use with the Model CTA Cue Transmitter

Other Tech Notes

New Digital Telephony Technologies
Use of Nexus with DDS
Using the Matrix, BlueBox, Vector or HotLine on a "Dry Pair"
Tips on Buying Used Comrex Equipment

Field Tips

Phone Line Basics
Ask the Codec Answer Guy
Use a Computer UPS at your Remote
Use of Nexus with DDS
Using ISDN to Increase POTS Codec Performance
BlueBox STL Backup
Using a Comrex POTS Codec on a "Dry Pair"
Coding Delay in ISDN Codecs
Data Connections for Comrex Digital Audio Codecs
Codec Compatibility for Comrex Equipment on ISDN and Other Digital Circuits
Thoughts on Digital Audio Data Reduction "Dueling Algorithms"
Technical Explanation of Comrex Turbo G.722
STL Backup with the ISU128 TA and Comrex Digital Audio Codecs
Automation Tones on the DXR.1
Remoting the status indicator on older DXP/DXR G.722 Codecs
Connecting a TCB-1 to a PC Sound Card
Codecs and Sound Cards
Tips for "RF-Proofing" Comrex Equipment
Adtran Terminal Equipment
Using Multiple Headphones on the Matrix

Applications

A Telecommuting Primer for Talk Hosts
Talkers Magazine: The Comrex HotLine
User Report: You Can Perform Magic on a POTS Line
User Report: Matrix Does the Job in Ohio (PDF File)
User Report: All-in-One Matrix Goes to Mexico (PDF File)
User Report: Vector - Playstation or Joystick?
User Report: Vectors - The Most Travelled Outside Broadcast Equipment