05/2014
6-297
DC SC2020
General
6.6.5.1 Super G3 Fax
Version 1.1
6.6.5.1 Super G3 Fax
In 1996 ITU-T, [Super G3 Fax] is recommended.[Super G3 Fax] supports 28.8Kbps Fax communication,
has modem capability of V.8 and V.34, and its protocol consists of V.8 and V.34 parts....33.6Kbps is also
available as an option. With [Super G3 Fax], 28.8Kbps communication with the other companies Fax is
made possible, and so is the communication with the conventional 14.4K/9600 bps G3 Fax.
• When communicating via [Super G3] mode, [SG3] is recorded in the Report Mode column.
• [Super G3] Image Information Transmission is performed in ’ECM (Error Correction Mode)’.
• V.34 is the standard for 28.8K (option: 33.6K) to 2400 bps modem; V.8 is the standard for deciding
on the procedure to select the optimal mode for the preceding line condition to V.34.FIF configura-
tion (Table 1) of CM and JM signals used in V.8 and the details of every bit are as follows.
[Super G3 Fax] can communicate with conventional Fax in standards other than V.34 (28.8K), such as
V.17 (14.4K) and V.29/V.27ter(9600/4800), and has V.8 feature which supports the procedure for select-
ing the optimal speed for verifying the line condition.
• TCF signal (in Phase B) is not used in V.34.
• The command (such as NSF/DIS) speed for the conventional procedure is 1200bps in V.34.
Figure 1 j0mf2716
NOTE1 Signal Names and Contents
CNG (Calling signal):
The signal for showing the communication function from the outgoing terminal is sent continu-
ously until ANSam arrives.
CNG is not recorded in Trace.
During Manual Send, ’CI’ signal is sent as V.8 Calling signal
When Phase B is entered without ANSam being detected and DIS V.8 capability is available
(bit 6=1)’, send CI from the outgoing side and return to the V.8 procedure in Super G3 mode.
ANSam (Response signal):
To Next Page
Loading...
Need help?
General
