Toshiba QRCU3A DTMF Card (Refurbished) Modules & Cards manages alarm panel LEDs for

manages alarm panel LEDs for system status

and speaker buttons

Adjustable display contrast levels adapt to different lighting

which automatically makes Daylight Savings Time adjustments

Avaya Definity TN744C Call Classifier Tone Detector Definity Card

Toshiba QRCU3A DTMF Card (Refurbished) Modules & Cards manages alarm panel LEDs forThis Toshiba Card is a 3 circuit DTMF receiver ABR Detector. 1 per system required of connection of DTMF standard telephones. Direct Inward System Access (DISA) lines, and voice mail devices. Also provides busy tone detection for ABR. The QRCU3 mounts inside the KSU. Key Features: Mfr. Part #: QRCU3A Toshiba DTMF Card 1 per system required for connection of DTMF standard telephones, direct inward system access lines, and voice mail devices Also