Panasonic KX-TD500 User Manual page 54

2.2 Making Calls
• If a call between two external parties (you and the other party ) is established, both
parties will hear an alert tone 15 seconds before the time limit (Default: 10 min) expires. You
can extend the call duration time (Default: 3 min) by pressing any key except " " while
hearing an alert tone.
• If Built-in Automated Attendant service is set, you can access the desired extension
simply by pressing one-digit number (0-9) according to the outgoing message.
• If you failled to enter a valid DISA user code three times consecutively, the call will be
disconnected automatically.
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Operation