List four rotary dial functions that can utilize the REC, REL, and Hold features.
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Answer

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Step 1
: Understand the functions of REC, REL, and Hold on a rotary dial.

- REC: This function allows you to record a telephone number that you have dialed, so you can call it back easily without having to manually dial the number again. - REL: This function releases a call holding status, which allows you to switch between two calls or resume a call that was previously on hold. - Hold: This function places a call on hold, which allows you to temporarily disconnect from the call without ending it. This is useful when you need to attend to another matter or when you want to switch between two calls.

Step 2
: Identify rotary dial functions that can utilize the REC, REL, and Hold features.

Final Answer

1. Speed dialing 2. Call waiting 3. Three-way calling 4. Call transfer