Telephone Line Emulator User’s Manual
40-400-00020, Rev. M
25
off, 0.1 seconds on, 0.1 seconds off. The repeat number for both simple and complex
cadences can be set from 1 to 20. If the Repeat Forever box is not checked (on the Call
Waiting screen, continuous dial tone will follow the repeat sequence.
Delay Before Dial Tone
After going off-hook, this is the delay before dial tone is heard. It is programmable from 0
to 25 seconds. Default is 0.1 seconds.
Delay Before Second Dial Tone
Second Dial Tone is accessed by dialing the Revert to Dial Tone Phone Number
(programmed on the Phone Number Screen). This is the delay before the Second Dial
Tone is heard. It is programmable from 0 to 25 seconds. Default is 0.5 seconds.
Loop Parameters
Loop Parameters are those conditions that are directly related to the two wire loop:
Impedance, Attenuation, and Loop Current. Impedance matching is important for many
applications so that all signals sent to the switch network are absorbed and not reflected
back to the caller. Attenuation is the loss in signal level (measured in dB) that occurs from
one line to another. The TLE allows for programming of this loss on the receive side.
Signals transmitted to the TLE are not attenuated until they reach the connected line. The
TLE also allows for programming of the loop current, normally determined by the battery
feed and the length of the loop.
Figure 15. Loop Parameters Screen
Impedance
Impedance options for the TLE allow each line to be configured for either 600 (600 + 2.2
µF) or 900 (900 + 2.2 µF) ohms. The default is 900 ohms. Users who purchase the TLE-
INTL software module ( V2.00 or greater) will get three additional options for Line
Impedance. These are the complex impedances for Australia, Germany, and the United
Kingdom. Version 3.00 now includes Sweden.
To Next Page
Loading...