Black Box IS300AE, Руководство пользователя

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ISDN TA/V
This chapter addresses the AT commands and S-Register settings that affect
the method of error correction and flow control used by your ISDN TA/V.
Use the
ATS n ?<CR> command (where n is the S-Register number you’re
interested in) to display the existing S-Register setting.
The factory configurations have been designed so that appropriate settings
for these commands are determined for you; however, if you need to alter any
of them simply reference the appropriate command within this chapter and
alter the ISDN TA/V’s configuration accordingly. The settings of Factory 0
are shown in bold type with all other variants being shown in plain text. The
AT prefix and <CR> suffix required when commanding the ISDN TA/V to
alter a setting are omitted.
17.1 Defining Whether Error Compression, and/or Rate Adaption Will Be Used
Defined using the \N command. The type of error correction protocol used
by your ISDN TA/V, and whether rate adaption is implemented or not, must
be configured to be compatible with that used by the remote ISDN TA/V,
and in the majority of cases
\N10 will prove to be the optimum setting.
However, if this option is not compatible with the remote device, you will have
to select the appropriate setting from the list below. If you do not know which
protocol the remote device is configured to use, and have tried to establish a
connection using the default value but found it to be unsuccessful, contact
the operator of the remote modem for assistance.
\N8 Strict V.110 rate adaption is employed with a maximum
asynchronous data rate of 19200 bps.
\N9 V.110 rate adaption is employed with a maximum
asynchronous data rate of 38400 bps.
\N10 V.110 rate adaption with an asynchronous data rate up to
38400 bps, or V.42bis error correction and data compression
if it is negotiated.
The maximum synchronous data rate is always 64000 bps. Selecting V.110 rate
adaption or V.42bis error correction is made by reconfiguring the
\N
command in combination with S-register S41 (see Section 16.1 ).
If this command is altered while the ISDN TA/V is on-line, it does not take
effect until after the call has been cleared.
17. Error Correction, Flow Control,
Data Compression, Rate Adaption