Multi-Tech Systems MMV1600 owner manual Mla/B/D

Xon/Xoff

Flow

Control

and

Pacing,

you

will

F11-F12

end up with Xon/Xoff Pacing, and with CTS Flow Control plus

Pacing, data flow will

be controlled by the presence of the DTR

(pin 20) signal on the RS232 interface. F11 turns on Inverted

DTR so that a high signal stops data flow and a low starts

data flow. F12 turns off Inverted DTR so

that it acts normal

(high on and low off). If Flow Control is off, Pacing cannot be

turned on. If

Pacing is off, inverted DTR cannot be turned on.

Xoff/First

F13

is

a

special

pacing

command

that

is

called

X/off

First

Char.

Character

pacing.

Selecting

F13

causes

the

MultiMux

to

stop

data

flow

to

the

channel

device

upon

receipt

of

a

Xoff

Character.

F13-F14

The next character from the channel device will start data (it does

not have to be an Xon

Character). F14 will turn off this feature.

Identification

The

Identification

commands

identify the type of MultiMux. This

Commands

information

is

valuable

when

communicating

with

Multi-Tech's

Technical Support personnel about your unit or its performance.

I0-2

The

l0

command

identifies the product. The I1 command

indicates the Aggregate board firmware version. The I2

command indicates the Voice/Fax firmware version.

List Channel

The List Channel Parameters command causes the MultiMux

Parameters

to display the condition of the parameters for each channel on the

system’s

supervisory

console

as

shown

in

the

following

example.

L-L0

To

display

the

parameters

for

an

individual channel,

say

channel

L1-L32

three, you would enter ATL3 and hit your Return key. To display

the parameters for all of the channels, enter ATL0 and then hit

your Return key.

Local Channel Parameters/ Node # 01

STP

FLOW

ENQ/

PASS PASS DEST DEST LINK

CHN

SPD WD BIT PAR

CTRL

ACK ECHO PACE

EIA

XON

CHN NODE A/B

01

19200

8

1

NONE

CTS

OFF

OFF

OFF

OFF

OFF

01

02

A

02

19200

8

1

NONE

CTS

OFF

OFF

OFF

OFF

OFF

02

02

A

03

19200

8

1

NONE

CTS

OFF

OFF

OFF

OFF

OFF

03

02

A

04

19200

8

1

NONE

CTS

OFF

OFF

OFF

OFF

OFF

04

02

A

05

19200

8

1

NONE

CTS

OFF

OFF

OFF

OFF

OFF

05

02

A

06

19200

8

1

NONE

CTS

OFF

OFF

OFF

OFF

OFF

06

02

A

07

19200

8

1

NONE

CTS

OFF

OFF

OFF

OFF

OFF

07

02

A

08

19200

8

1

NONE

CTS

OFF

OFF

OFF

OFF

OFF

08

02

A

09

19200

8

1

NONE

CTS

OFF

OFF

OFF

OFF

OFF

09

02

A

10

19200

8

1

NONE

CTS

OFF

OFF

OFF

OFF

OFF

10

02

A

11

19200

8

1

NONE

CTS

OFF

OFF

OFF

OFF

OFF

11

02

A

12

19200

8

1

NONE

CTS

OFF

OFF

OFF

OFF

OFF

12

02

A

13

19200

8

1

NONE

CTS

OFF

OFF

OFF

OFF

OFF

13

02

A

14

19200

8

1

NONE

CTS

OFF

OFF

OFF

OFF

OFF

14

02

A

15

19200

8

1

NONE

CTS

OFF

OFF

OFF

OFF

OFF

15

02

A

16

19200

8

1

NONE

CTS

OFF

OFF

OFF

OFF

OFF

16

02

A

OK

Modem Link

This parameter specifies which link modem/DSU (link A, link B

Used

or

Dynamic)

each

channel will use for data communications.

Links should be load balanced so that heavy traffic channels are

MLA/B/D

not all using the same link. The MLD command selects dynamic

channel

selection

which permits the MultiMux to pick the least

busy link per channel. When one channel is dynamic, all must be

dynamic. Works only in point-to-point networks and both muxes

must be set to MLD.

Parity

The

Parity

Select

commands

set

the

parity

of

MultiMux

opera-

Select

tions.

Under

normal

operations

(default

conditions)

parity

is

off

and

word

length

is

set

at

eight

bits.

Since

the

MultiMux

is

P0-2

intended to be transparent to channel device operation, this

combination will

pass

parity information to the channel devices.

The P0 command turns parity off, P1 sets odd parity and P2 sets

it at even.

Response

The

Response

Time

Priority

command

determines

how

long

the

Time

mux

will

wait

to

send

data

from

channel

devices

relative

to

each

Priority

other. An R0 setting is the

shortest

and

R3

the

longest.

The

Response

Time

Priority

commands

ensure

that

channel

R

operations which require heavy data transfers, such as program

transmissions

or

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