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3-253821-A2-GB20-30 February 1998
DTE Dialer
The DTE Dialer configuration options establish the
DTE-to-modem protocol for call establishment and
control.
Table 3-5 shows each DTE Dialer configuration
option as it appears on the LCD.
Table 3-5
(1 of 5)
DTE Dialer Configuration Options
DTE Dialer Type: AT
Nxt AT Disable V25bis_Async V25bis_Bsync V25bis_HDLC DTR=Direct1 AT&T_Exclusv
Data Terminal Equipment Dialer Type. Identifies to the modem the type of dialing method and protocol used by the DTE.
AT – Allows AT command protocol to be used as a method for entering commands and dialing when used in an
asynchronous application.
NOTE: The modem will not respond to AT commands if DTE Dialer Type is not set for AT.
Disable – Disables any type of DTE dialing method. Dialing can only be performed using the SDCP’s Dial command or
attached telephone.
V.25bis Async – Selects V.25bis Async as the dialing method and protocol used by the modem. Ths option is available
only when Async/Sync Mode is set to Async. The character length must be 7 data bits with even parity and 1 stop bit.
V.25bis Bisync – Selects V.25bis Bisync as the dialing method and protocol used by the modem. This is also known as
character-oriented protocol. This framing protocol uses two synchronous control characters and a start-of-text control
character before the text block and an end-of-text control character after the text block. This option is available only when
Async/Sync Mode is set to Sync. The character length must be 7 data bits with odd parity and 1 stop bit.
V.25bis HDLC – Selects V.25bis HDLC as the dialing method and protocol used by the modem. This is also known as
bit-oriented protocol. This framing protocol uses flag, address and control characters before the text block and a frame
sequence check and flag after the text block. This option is available only when Async/Sync Mode is set to Sync.
DTR=Direct1 – Allows the modem to automatically dial the number stored in directory location 1 whenever DTR turns
ON.
NOTE: DTR dialing should not be used if dial access security is enabled.
AT&T Exclusive – Enables a subset of the proprietary AT&T command set, which is required for some applications that
use AT&T equipment. Currently, the only application supported is AT&T DATAKIT. This option is available only when
Async/Sync Mode is set to Async.
For Async Dial and UNIX Dial, AT is the factory default.
For Sync Dial and Sync Leased, Disable is the factory default.
AT command equivalents are &M
n
and &Q
n
.
*AT Escape Char: 043 ASCI
Nxt " 043 ASCI
AT Escape Character. The escape sequence (+++) allows you to move back and forth between Command mode and
Data mode. The ASCII value of the escape character (043 ASCII) can be set to any ASCII value from 0 ASCII to
255 ASCII. However, the escape character is disabled if a value greater than 127 ASCII is entered. When disabled, the
call must be disconnected to return to Command mode.
The factory default is 043 (ASCII AT escape character).
AT command equivalent is S-register S2=
n.
* This configuration option only appears if DTE Dialer Type is configured for AT.