Description

TOSHIBA K4RCU1A DTMF Tone Detection Receiver

• (Stock# K4RCU1A)

The 4-circuit Toshiba DTMF/ABR Receiver Card (K4RCU1A) provides:

• Is an optional PCB installed on the TMAU motherboard
• Required to interpret Dual-tone Multi-frequency (DTMF) tones from standard telephones
• Required for Direct Insward System Access (DISA)
• Required for Direct Inward Dialing (DID)
• Used to detect busy tone for Automatic Busy Redial (ABR) feature and must be installed to allow ABR to operate
• K4RCU has four (4) DTMF receivers and four (4) ABR busy tone detectors

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