AT&T MERLIN LEGEND MLX-10 Non-Display Telephone User Manual page 56

Features
To Complete a Call and Answer a Waiting Call
1. When you hear Call Waiting tone, hang up.
Your phone rings.
2. Lift handset or press Speaker.
You are connected to the call.
To Put a Call on Hold and Pick Up a Waiting Call
1. Press Hold.
2. Press SA Originate Only or ICOM Originate Only. See Note.
3. Press Feature and dial 87.
You are connected to the call.
4. To return to call on hold, press button with fast-flashing light.
Note: An ICOM Originate Only or SA Originate Only button
must be available for you to pick up the call; otherwise you
must hang up to get the call.
5-10
Call Waiting