Multitech MTPSR1-202ST Guía de usuario descargar pdf (Pagina 71)

Appendixes

MTPSR1-202ST

&C1

DCD goes from low to high when the ProxyServer establishes a connection (DCD

normal).

&C2

DCD drops briefly following a disconnect, then goes high again. Register S10 defines

how long the DCD signal remains low after a disconnect.

Command:

&Dn

Function: DTR Control

Values: n = 0, 1, 2, or 3

Default:

&D1

(Exits Data Mode and re-enters AT command mode)

Description: The

command controls how the ProxyServer responds to the DTR (Data Termi-

nal Ready) signal on pin 20 of the RS232E/V.24 interface. A high DTR signal tells the ProxyServer

that the connected computer is ready to communicate.

&D0

The ProxyServer ignores the DTR signal.

&D1

When DTR goes low, the ProxyServer exits data mode and re-enters AT command

mode.

&D2

If DTR goes low when the ProxyServer is online, the ProxyServer hangs up, returns

to command mode, and disables autoanswer. If the ProxyServer is offline, it neither answers nor

dials while DTR is low.

&D3

When DTR goes low, the ProxyServer resets the data port and disables autoanswer.

If DTR goes low when the ProxyServer is online, the ProxyServer hangs up, resets the active con-

figuration to the stored configuration, and disables autoanswer.

*: If the user wishes to accept calls while DTR is low, the ProxyServer must be configured to ignore

DTR. This is accomplished by entering AT&D0<cr>. With this configuration, the ProxyServer is able

to accept calls while DTR is low. If this configuration setting is not made, the TA rejects incoming

calls until DTR is high while the calls comes in.

Command:

&En

Function: Flow Control

Values: n = 3–7, 12, 13

Default:

&E4, &E7, &E13

Description: The

command selects the method by which the ProxyServer controls the flow of

data to and from the computer, to prevent either device from accepting data faster than it can handle.

The ProxyServer provides flow control in both directions. When the ProxyServer halts data flow, it’s

called

flow control

; when the computer halts data flow, it’s called

pacing

&E3

Disable flow control by the ProxyServer.

&E4

Hardware flow control.

&E4

causes the ProxyServer to use the CTS signal on pin 5

of the RS232E/V.24 interface to regulate flow control. When CTS goes low, data flow from the

computer is suspended until CTS goes high again. This method works with pacing, which uses the

RTS signal on pin 4. Hardware flow control cannot be enabled unless an error correction protocol

is selected.

&E5

XON/XOFF flow control. This is an in-band method, in which the XON and XOFF

characters (^Q and ^S respectively) are inserted into the data stream, rather than using separate

control lines. When an XOFF character is detected, the data stream is suspended until an XON char-

acter is detected. The drawback to this method is that some files may contain these characters,

causing the file transfer to be suspended indefinitely.

&E6

When XON/XOFF pacing is active, the ProxyServer responds to and discards the

XON/XOFF characters from the computer.

&E7

When XON/XOFF pacing is active, the ProxyServer responds to the XON/XOFF

characters and passes them through the communications link to the remote device, thereby pacing

the remote terminal adapter as well.

&E12

Disables pacing

&E13

Enables pacing.

Command:

#Xn

Function: Send Single/Multiple Xoff Characters

Values: n = 0 or 1

Default:

#X0

1 2 ... 66 67 68 69 70 71 72 73 74 75 76 ... 103 104

Comentarios a estos manuales

Sin comentarios

Multitech MTPSR1-202ST Guía de usuario Pagina 71

Comentarios a estos manuales

Relacionado con productos y manuales para Redes Multitech MTPSR1-202ST