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DISA Card (KX-T20691) Connection
1. Disconnect the AC cord from the system.
2. Loosen the screws and remove the cover.
3. Attach the DISA card to the marked connectors.
4. Replace the cover and secure the screws.
5. Connect the AC cord again.
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The DISA feature allows an outside caller to have direct access to intercom calls. System pro-
gramming is required. See “#10 OGM Recording” on page 24 and “#24 Call Incoming Mode
Selection” on page 28.
Keep the following conditions in mind:
• When a caller enters the second digit of an extension number (1 through 6) during the mes-
sage, he/she can reach the extension directly.
• If the call is not received, the assigned extensions will ring. See “#04/#74 CO1 Ringing
Assignment (Day/Night), “#05/#75 CO2 Ringing Assignment (Day/Night)” on page 22 and
“#60 DISA Ringing Time” on page 29.
• If the caller enters 0, the assigned extensions can receive his/her call. See “#04/#74 CO1
Ringing Assignment (Day/Night), “#05/#75 CO2 Ringing Assignment (Day/Night)” on page
22.
• If the caller enters 7, 8 or 9, or enters nothing, extension 21 will receive his/her call.
• Any calls from a rotary phone will be received by extension 21.
Installation of Optional Card and Unit