ADTRAN Express 3010, Руководство пользователя

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Chapter 3. Application Configuration
3-8 Express 3010/3110 User Manual 61200239L1-20
OPTIONS FOR BOTH LEASED AND
SWITCHED ISDN SERVICE
This section describes the options that apply to both leased digital ser-
vice and dial operation. To access these options, first go to the Config-
uraton menu.
DTE Options
Press the number corresponding to DTE Options and press
Enter
to
display the DTE options: Asynchronous and Synchronous. Select the
desired option.
Bit Rate
Press the number corresponding to Bit Rate and press
Enter
to display
the Bit Rate options.
The Bit Rate can be set synchronously for 2400, 4800, 9600, 19200,
38400, 48000, 56000, 64000, 112000, and 128000 bps. The Express will
autobaud to the asynchronous DTE rate.
Transmit Clock for Synchronous Data
Press the number corresponding to Transmit Clock and press
Enter
to
display the Transmit Clock options: Normal and External. Select the de-
sired option.
Selecting the Normal option causes the Express to be the synchronous
DTE interface transmit timing source. Transmit data is timed from the
transmit clock provided by the Express on the DTE connector. Normal
clock is the normal mode of operation for the Express.
With the External option selected, the Express slaves to an external trans-
mit timing source. The external clock is provided to the Express by the
external transmit clock signal at the DTE. This signal is echoed by the Ex-
press to the transmit clock signal on the DTE port.