43967002TH Rev.1
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Oki Data CONFIDENTIAL
5. Maintenance Menu
5.8.2 Tone For Echo
5.8.2.1 TX(During send)
Value
Default
Display condition
Disable
Enable
Disable
None
When set to
Enable
DIS ignore once *1:
Enable
EP tone addition during V29 send *2:
Enable
Wait time between DIS – DCS *3:
1000 ms
When set to
Disable
DIS ignore once *1:
Disable
EP tone addition during V29 send *2:
Disable
Wait time between DIS – DCS *3:
0 ms
This setting is effective during all communications of direct dialing and Abbr. dialing.
DIS ignore once *1:
During the overseas communication, the DIS signal can be ignored once in
order to re-start the echo suppressor function that has been stopped by the
CED signal. The MFP responds against the second DIS signal and sends out
the DCS signal. With this setting, the MFP can send out the DCS signal under a
good line condition with less echo.
This setting is used in the case when the communication error such as T.1.1
occurs due to adverse effect of echo during the overseas communication.
EP tone addition during V29 send *2:
During the overseas send, reception of the training signal by the destination
machine can be ensured by adding the EP tone before the sending the training
signal to avoid line delay.
The EP tone of 0.5 seconds is added to the training signal of 9600/7200 bits/s +
TCF/tr image information.
The EP tone of 0.5 seconds at 1700 Hz can be destroyed by the group delay of
communication line so that the head portion of the training signal is damaged. In
such a case, reception of the training signal by the destination machine can be
ensured by adding the EP tone before sending the training signal.
Note!
Some types of fax machine cannot receive the training signal
9600/7200 bits/s + TCF with the EP tone. Be careful of the type of
the fax machine.
Wait time between DIS – DCS *3:
Time before the DCS signal send start after the DIS signal reception end.
