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4
Telco Sentinel Installation and Operation Manual
OVERVIEW
Product Overview
The Telco Sentinel is a bi-directional DTMF/ASCII transceiver. It converts DTMF
tones to ASCII and ASCII to DTMF tones when connected to a telephone line and
provides incoming caller ID data. The unit is also equipped with an electronic hybrid
providing send and caller audio on 3.5mm jacks, along with removable screw ter-
minals. The Telco Sentinel interfaces with the PC via a USB Com port. Tones are
transmitted at a selectable speed of 50ms, 100ms or 500ms tone/space. A post-trans-
mit delay of 0.0 to 9.9 seconds can be added that will cause a delayed transmission
of tones after the string is received on the USB port. The DTMF transmit buffer is
256 characters long. The Telco Sentinel can be configured to automatically answer
after between 1 and 9 rings, or auto-answer may be disabled. Front panel send and
caller telephone line audio trimmers are supplied, along with front panel LED’s dis-
play; power, ring, hook and tone. The Telco Sentinel is USB bus powered.
Features/Benefits
• Bi-directional DTMF/ASCII transceiver
• Decodes caller ID data.
• Built-in electronic hybrid for caller/send audio.
• USB COM port interface for connection to PC.
• LED indicators for power, ring, hook, and tone detection.
• Fully RFI proofed.
• USB bus powered.
• Up to four Telco Sentinels may be rack mounted on one RA-1, 1-RU rack shelf.
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