GAI-Tronics 12509-037 Telephone Management Application (TMA) Installation Bulletin (Ver. 7.3.3 and newer) - Manual (Page 11)

Pub. 42004-447A
Telephone Management Application (TMA) Installation Bulletin Page: 11 of 19
f:\standard ioms - current release\42004 instr. manuals\42004-447a.doc
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TMA DTMF Transceiver
The TMA DTMF Transceiver interfaces the PC running the TMA software to the telephone line. A front
view of the TMA DTMF Transceiver and a description of the LED indicators are provided below:
Figure 2. TMA DTMF Transceiver Front View
Table 2. TMA DTMF Transceiver Status Indicators
LED Status Description
On The SPI application is running on the PC and is connected to the TMA DTMF
Transceiver.
DTR
Off The SPI application is no longer running on the PC and is disconnected from
the TMA DTMF Transceiver.
Flashing The TMA DTMF Transceiver is receiving power via the USB connection to
the PC.
On The TMA DTMF Transceiver is off-hook and connected to the phone line. OH/PWR
Off The TMA DTMF Transceiver is on-hook. If the DTR LED is also off, the
DTMF Transceiver is not powered.
Blinking Data is being transmitted to the PC.
TD
Off No data is being transmitted to the PC.