TDD Detector Installation Test
1.
Place the operator's headset or telephone in an Off-Hook condition
and listen for dial tone. There should be no difference between the
sound before and after the TDD Detector connection.
2.
Using the Operators Touch Tone keypad press the sequence
"[#][#][2]". This will initialize the test sequence for the TDD Detector
Card. The LEDs will turn on and off, next the voice will be output
followed by the transmission of the Baudot (TTY Code) message "The
quick brown fox jumped over the lazy dog's back 1234567890".
3.
Use a TTY to call this line and test the TDD Detector Card for proper
TTY detection.
4.
Use the Send Button on the Card or "[#][#][1]" on the Touch Tone
keyboard to test the Send function.
The TDD Detector Rack Enclosure is now installed and tested. Ultratec
suggests that the individual cards (lines) be tested for proper operation at
regular intervals. The easiest way to test the lines (and familiarize the
operators with the TTY) is to make a TTY call into the 911 center.
LED 1
LED 2
LED 3
LED 4
LED 5
LED 6
LED 1 = Detect
LED 2 = Detect
LED 3 = Off-Hook
LED 4 = Automatic
LED 5 = Send
LED 6 = Power
NOTE:
On Card Rack units,
LEDs 1 & 6 are omitted. On
Stand-Alone units, LED 2 is
omitted.
TD3 card front showing indicator lights
