Sigrand SG-17B, Руководство пользователя

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Therefore, when setting up the bitrate of the communication line, special
attention should be paid to the encryption algorithm TCPAM and, when
necessary, the linear coding should be altered in order to produce the best
possible results.
In diagram 1, the permissible ranges of TCPAM encodings are shown.
Diagram 1
5696 Kbps
192 Kbps
192 Kbps
192 Kbps
15296 Kbps
8192 Kbps
6144 Kbps
3840 Kbps
0 5000 10000 15000 20000 25000
TCPAM128
TCPAM64
TCPAM32
TCPAM16
In order to adjust the encryption mode so as to suit the actual
characteristics of the specific line, the command
tcpamXXX
can be used
with the option
XXX
, where «XXX» stands for one of the 4 encoding types
(TCPAM128, TCPAM64, TCPAM32, and TCPAM16).
> tcpam128
Configuration......
Configuration complete
>

As can be seen from Diagram 1, some of the bitrate ranges allow for
several modes of encoding. When the noise level is high in the
communication line, encodings of lesser number of positions should be
chosen (TCPAM16, TCPAM32); when the bandwidth is limited, those with