av&t hospitality solution pvt. ltd · 2015-08-08 · dial character: standard 12 group (dtmf...
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- AV&T Hospitality Solution Pvt. Ltd · 2015-08-08 · Dial Character: Standard 12 group (DTMF Flash time: 80ms,100ms,300ms,600ms optional, standard 600ms Message Waiting Light Voltage:
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