Telephone Line Emulator User’s Manual
40-400-00020, Rev. M
87
Dual Tone to FSK
The time from the end of a Dual Tone Alerting Signal to the start of FSK is programmable
from 40 mS to 5 seconds in 5 mS increments.
OSI to FSK
The time from the end of an OSI to the start of FSK transmission is programmable from
250 mS to 500 mS in 5 mS increments.
DTMF/FSK to Ring
The time from the end of FSK transmission to the start of the normal ring cycle, or from
the end of a DTMF transmission to the start of the normal Ring cycle is programmable
from 180 mS to 2 seconds in 5 mS increments.
Line Reversal to DTMF
The time from a Line Reversal to the start of DTMF CID transmission is programmable
from 180 mS to 2 seconds in 5 mS increments.
Line Reversal to Dual Tone
The time from a Line Reversal to the start of Dual Tone Alerting signal is programmable
from 90 mS to 5 seconds in 5 mS increments.
On-hook Channel Seizure
The length of the On-hook Channel Seizure signal is programmable from 50 mS to 500
mS. The Channel Seizure signal is an alternating bit pattern that corresponds to the
transmission of multiple 55 Hex data bytes. Each data byte is 8.33 mS long,
consequently, the default value is equal to the transmission of 30 bytes (250 mS / 8.33 mS
= 30 bytes). When this timing value is adjusted, the TLE will select the number of full data
bytes equal to the time chosen divided by 8.33 mS.
On-hook Mark Time
The On-hook Mark Signal is sent after the Channel Seizure and prior to the data portion
of the CID transmission (Type I). The length of the On-hook Mark time is programmable
from 40 mS to 200 mS in 125 µS increments.
Off-hook Mark Time
The Off-hook Mark signal is sent after a valid ACK signal and prior to the data portion of
the CID transmission (Type II). The length of the Off-hook Mark time is programmable
from 40 mS to 200 mS in 125 µS increments.
Ring Burst Alerting Signal
The length of the Ring Burst Alerting Signal is programmable from 150 mS to 320 mS in
5 mS increments.
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