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Chapter 8 267
Signaling Encoder and Decoder - Screens and Control Fields
Control Fields for the Signaling Encoder and Decoder
Examples of Input Level Settings
Example 8-1 Example 1
Peak deviation 3 kHz, De-emphasis off. Set the input level to 3 kHz.
Example 8-2 Example 2
Peak deviation 3 kHz, De-emphasis 750 ms. Set the input level to 3 ×
0.212 = 636 Hz
See Also
“Trig Level” on page 278
Screens Where Field is Present
SIGNALING DECODER (All Modes)
Lo Tone
This measurement field lists the frequency or frequency error for the
low frequency tone in each tone pair. The measurement type is selected
by selecting the Freq field to display a list of measurement choices.
Operating Considerations
Frequency error is calculated by comparing the DTMF Encoder’s
frequency settings for each tone pair with the decoded frequencies.
Screens Where Field is Present
SIGNALING DECODER (Modes: DTMF)
Measure
This field is only displayed when the Channel field is set to Voice. This
field selects the type of decoded data to display: DSAT or DST codes,
message data (Data), or DTMF (Dual-Tone Multi-Frequency) tone data.
Screens Where Field is Present
SIGNALING DECODER (Modes: NAMP-NTAC)