Digicom COMSPHERE 3911 User Manual

September 1998

3910-A2-GN32-40

DTE Dialer Type:  Disable
Nxt   Disable   AT   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.

H

Disable

Disables any type of DTE dialing method. Dialing can only be performed using the DCP’s Dial
command or attached telephone.

H

AT

Allows AT command protocol to be used as a method for entering commands and dialing when
used in an asynchronous application. This is the only valid setting for leased-line applications. The
modem will not respond to AT commands if DTE Dialer Type is not set to AT.

H

V.25bis Async

Selects V.25bis Async as the dialing method and protocol used by the modem. The character
length must be 7 data bits with even parity and 1 stop bit.

H

V.25bis Bsync    

Selects V.25bis Bsync 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. The correct character structure for V.25bis Bsync dialing is 7 data bits, Odd parity, and 1
stop bit. If the modem is in Asynchronous mode, enter the following command string to configure it
for V.25bis Bsync dialing: AT&F&D1&S1&M233&W. If the modem is already configured for
synchronous operation, perform the following to set the character format: (1) use the modem’s front
panel to access the Async/Sync Mode configuration option and set it to Async; (2) scroll down until
the Asyn #Data Bits configuration option appears and set it to 7 data bits; (3) scroll down and set
the Asyn Parity Bit configuration option to Odd; (4) scroll through the DTE Interface group until the
Async/Sync Mode configuration option appears and set it to Sync; (5) move up one level in the
menu tree or move to the Top-Level menu, and follow the LCD messages to save the new modem
settings.

H

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.

H

DTR=Direct1

Allows the modem to automatically dial the number stored in directory location 1 whenever DTR
turns ON. DTR dialing cannot be used if dial access security is enabled.

H

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.

The AT commands for AT are &M0, &M1, &M3 or &Q0, &Q1, &Q3.
The AT commands for DTR=Direct1 dialing are &M2 or &Q2.