Blog Contents

Digifon Logo link to main page

6.  Test Your Line, Check Your Signal Path, Eat a Mint…   5/11/12 by Dave Immer

Breath considerations aside, it’s a good idea to make sure your codec send and receive is what you intend it to be prior to making a connection. Confirm your network is working and set your send level.

A good way to do this is to set up a loop-back condition that takes the signal you feed to the input and “loops’ it back to the output. This way you can confirm that your send is “hitting” your codec and identify where the codec return is appearing in your monitor chain. Hardware codecs will have a setting for this.

The return will be heard as that familiar slap-back which, in this case, is what you want. However, if you hear a continuously repeating echo, then that indicates you will be folding the far-end back to themselves (when you are connected) which you don’t want! See last week’s email.

For ISDN users an easy way to check your network is to simply call yourself from one number to the other. For Source-Connect users, connect to “Echo” which has been set up for the same purpose. This allows you to test your line and check your signal path for an audio feed that is minty-fresh!

Let me know if you have questions or comments about Signal Paths. Thanks,