Asynchronous Terminals and Printer Processes Programming Manual

PRINTER I/O

Modem Characteristics

Devices that are connected to the host through modems require

special SYSGEN modifiers. The modem control characteristics

interact with the flow control characteristics described in "Flow

Control Characteristics" in this section. Table 5-6 shows these

modifiers and how to change them.

Table 5-6. Modem Control Characteristics

SYSGEN CONTROL CMI

Characteristic Modifier Parameter Attribute

_______________________________________________________________

Automatic baud rate DUAL212 (none) AUTOBAUD

detection

| (300/1200 baud)

Automatic disconnect AUTODCONNECT 67 AUTODCONN

| Automatic answer AUTOANSWER (none) (none)

NOAUTOANSWER*

CTRLANSWER**

Half duplex turn- HDTURN1 (none) HDXTURNCHAR

around character HDTURN2

Wait for modem (none) 11 (none)

Disconnect modem (none) 12 (none)

_______________________________________________________________

* ATP6100 only

** SERIALPRINTPROCESS only

Automatic baud rate detection supports Bell 212-type modems. If

SDCD is high, the baud rate is 1200. If it is low, the baud rate

| is 300. Automatic baud rate detection cannot be used for 5573

| laser printers because 5573 printers support only speeds of 1200

| baud and above.

The AUTODCONNECT SYSGEN modifier supports European CCITT-

standard, full-duplex modems. When automatic disconnect is

enabled, the I/O process monitors carrier detect (CD) as well

as data set ready (DSR). If an error occurs during processing

5-12 November 1987