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Port type, Physical por t i nterface, Bl ocked port flag – Cabletron Systems 1800 User Manual

Page 188: X.3 line speed

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12-10

SmartSwitch 1800 4. 0 User G uide, Rev 01

1

At line speeds of 38.4K bps or higher,

RTS/CTS H/W Flow Contr ol

should be

Y

.

2

If

1

(Transparent Polled Async HPAD) or

2

(Transparent Polled Async TPAD), con-

figure this async port as one end of an HPAD–TPAD PVC.

3

If

Assemble Ful l Message

is

Y

, the remote device must be configured to generate M-bit

packets.

4

The

Default Call ing Address

is relevant only if

Disable X. 121 User Cal ls

is

N

.

5

The

Called Address

is relevant only if

Autocall

is

Y

.

Port Type

specifies the protocol the port will support. Selecting this parameter will display a list
of all serial protocols loaded in the device.

Physical Port Interface

must be configured as follows. For reference, port locations are shown on

page 6-1

.

Port 0 is always

RS-232

.

Port 1 is

RS-232

or

DSU

, depending on whether the optional CSU/DSU card is

installed.

Ports 2 and 3 are determined by the attached cables:

RS-232

,

V.35

, or

RS-449

.

Blocked Port Flag

will cause the port to be enabled (

N

) or disabled (

Y

) at node IPL. The port will remain

in that state until this parameter is changed or an on-line enable (

[B], [B], [C]

from the

Main Menu) or disable (

[B], [B], [A]

from the Main Menu) is performed.

X.3 Line Speed

is the data transmission rate in bits per second. Specify the line speed that matches (as
closely as possible) the configuration of the device connected to the port.

Selecting this item displays a list of valid line speeds. To specify a speed, press the
letter corresponding to the speeds. Valid speeds are:

50

75

75/1200

100

110

134.5

150

200

300

600

1200

1840

2400

4800

9600

19.2K

38.4K

57.6K

Autobaud

Selecting

Autobaud

causes the line speed to be read from the first trans-

mission from the async device, then set automatically.

Async PAD Options

Async PAD Type

0–2

2

0

(X.3)

Devices Connected

PAD Type 0,2:

1

PAD Type 1:

1–16

1

Assemble Full Message

Y/N

3

Y

Data For warding Cri teria

0

0

(use PAD profile)

Special Forwarding Char

not currently used

n/a

Dynamic Signal ing Action

0

(none)

0

(none)

Table 12-3 Async Port Parameters

Parameter

Valid Values

Default Value

(continued)