Description
TOSHIBA K5RCU2A DTMF Tone Detection Receiver
- (Stock# K5RCU2A)
- 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
- K5RCU has four (5) DTMF receivers and four (4) ABR busy tone detectors
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