How can I add audio participants over the telephone in a bridge/MCU call

If you have someone that needs to join a conference by telephone for any reason, that user can join the conference using the following steps:

1. Dial 843-805-6070.
2. At the prompt, the user should enter 1 to join a conference.
3. The user will then be prompted to enter 8 + 4 digit conference ID, followed by the # sign.