CS500 Series: How to Change the Configuration Setting
At the factory, CS510/CS520/CS40 systems are set to a configuration setting of "A," which works with most phones. If you do not hear a dial tone, or if you have other audio problems, try changing the configuration setting, as described below.
To change the configuration setting:
- Turn the base unit over.
- Slide the configuration switch (see below) until the position indicator is aligned with a number.