Ampersand (&) Command Set B-7

Command

Function

 

 

&H1

Use hardware flow control. Requires that your

 

 

computer and software support Clear to Send

 

 

(CTS) at the EIA-232 interface.

 

&H2

Use software flow control. Requires that your

 

 

software support XON/XOFF signaling.

 

&H3

Use both hardware and software flow control. If

 

 

you are unsure about what your equipment

 

 

supports, select this option.

 

 

&In

Received data software flow (XON/OFF) control.

 

&I0

Disables XON/XOFF flow control of received data.

 

&I1

The modem acts on your typed XON/XOFF

 

 

commands, Ctrl-S or Ctrl-Q, and passes them to

 

 

the remote device.

 

&I2

The modem acts on your XON/XOFF commands,

 

 

but removes them from the data stream instead

 

 

of passing them to the remote device. This is the

 

 

recommended setting for ARQ mode.

 

&I3

Hewlett Packard-Host mode. Applies only to

 

 

modems attached to an HP mainframe that uses

 

 

the ENQ/ACK protocol. Use in ARQ mode only.

 

&I4

Hewlett Packard-Terminal mode. Applies only to

 

 

modems attached to terminals in an HP system

 

 

that uses the ENQ/ACK protocol. Use in ARQ

 

 

mode only.

 

&I5

This setting is designed to enable flow control on

 

 

the phone link when the connection is not under

 

 

error control. For this to work, the remote device

 

 

must have &I5 capability.

 

 

&Kn

Enable or disable data compression.

 

&K0

Disable data compression.

 

&K1

Use auto-enable/disable. The modem enables

 

 

compression if the serial port rate is fixed (&B1)

 

 

and disables compression if the serial port rate

 

 

follows the connection rate (&B0) because

 

 

compression offers no throughput advantage

 

 

when the serial port and connection rates are

 

 

equal; in fact, compression may degrade

 

 

throughput.

 

&K2

Always enable data compression.

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3Com 56K manual Use hardware flow control. Requires that your, Computer and software support Clear to Send, Remote device