Zhone 3920Plus Bedienerhandbuch PDF herunterladen (Seite 114)

COMSPHERE 392xPlus Modems

5-38 October 1998 3920-A2-GH30-40

Table 5-7

(2 of 8)

DTE Interface Configuration Options — Singleport Mode A

Async DTE Rate: 19200

Nxt 19200 115200 76800 57600 38400 28800 14400 12000 9600 7200 4800 2400 1200 0–300

This configuration option only appears when Async/Sync Mode is configured for Async.

Asynchronous DTE Data Rate. Identifies the asynchronous DTE’s operating rate to the modem. Data rates from

115,200 bps to 300 bps are supported.

NOTE: To prevent losing data in 115,200 bps applications using rates higher than 19,200 bps, a 16650 UART on the

PC’s serial port may be required, as well as a communications package which can take advantage of its 16-byte

buffer. In addition, a 386 PC (25 MHz or faster) is required, and the RS232 cable length must be minimized to

reduce capacitance.

NOTE: To configure the Async DTE Rate differently than the modem rate, ensure that the Err Contrl Mode configuration

option (see the V.42/MNP/Buffer — Singleport Mode section) is not set to DirectMode.

The AT prefix determines Async DTE Rate.

Asyn #Data Bits: 8

Nxt 8 7 9(DirectMde) 6(DirectMde)

This configuration option only appears when Async/Sync Mode is configured for Async.

Asynchronous Number of Data Bits. Determines if the asynchronous data length is composed of 6, 7, 8, or 9 data bits.

This data length excludes start, parity, and stop bits.

8 – Sets data length to 8 data bits.

7 – Sets data length to 7 data bits.

9(DirectMde) – Sets data length to 9 data bits. Only valid when Err Contrl Mode configuration option is set to

DirectMode.

6(DirectMde) – Sets data length to 6 data bits. Only valid when Err Contrl Mode configuration option is set to

DirectMode.

NOTE: If the DTE Dialer Type configuration option is set to AT or V.25bis Async, then the total character size must

equal 10 bits. Total character size consists of start, data, parity, and stop bits. V.25bis Async must use 7 data

bits with even parity and 1 stop bit. The total character size for Error Control mode, DirectMode, or BufferMode

must be 11 bits or less.

The AT prefix determines the async character length.

Asyn Parity Bit: None

Nxt None Even Odd Mark Space

This configuration option only appears when Async/Sync Mode is configured for Async.

Asynchronous Parity Bit. Determines the type of asynchronous parity bit. The parity of the DTE must match the parity of

the modem. Parity options include None, Even, Odd, Mark, or Space.

None – No parity bit is used.

Even – Parity bit is set so that total number of 1’s in data bits plus parity bit is even.

Odd – Parity bit is set so that total number of 1’s in data bits plus parity bit is odd.

Mark – Parity bit is always set to 1. Only valid if Asyn #Data Bits configuration option is set to 7.

Space – Parity bit is always set to 0. Only valid if Asyn #Data Bits configuration option is set to 7.

NOTE: If the DTE Dialer Type configuration option is set to AT or V.25bis Async, then the total character size must

equal 10 bits. Total character size consists of start, data, parity, and stop bits. V.25bis Async must use 7 data

bits with even parity and 1 stop bit. The total character size for Error Control mode, DirectMode, or BufferMode

must be 11 bits or less.

The AT prefix determines parity of the async character.

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