ADCP-61-471 • Issue 4 • June 2000 • Section 2: Operation and Maintenance

DLP-558

Page 2 of 3

4.Repeat Step 3 for each field that you wish to change.

5.Assign the selections by pressing Enter or Return.

6.Momentarily press RESET on the MPU front panel, or perform a soft reset, in order to re- initialize the X.25 configurations.

Reference: DLP-519MPU Replacement and Testing

Reference: DLP-538Reset/LED Test Commands

Stop! You have completed this procedure.

Table 558-1. Data Link Layer LAPB Parameters

 

SET

 

CONFIGURABLE

DATA LINK PARAMETER

VALUE

RANGE

DEFAULT

Address Field Assignment *

 

DTE, DCE (A=1, B=3)

DTE (A=3, B=1)

 

 

 

 

Modulo

8

 

 

 

 

 

 

Window Size (K) *

 

1 to 7 frames

7

 

 

 

 

Frame Size (Bits per I frame) *

 

1080, 2104 bits

2104

 

 

 

 

N2 (retransmission count) *

 

2 - 16

7

 

 

 

 

T1 (retry timer) *

 

2 to 20 seconds

3 seconds

 

 

 

 

T2 (response delay timer)

0.3 seconds

 

 

 

 

 

 

T3 (not supported)

 

 

 

 

 

 

 

T4 (not supported)

 

 

 

 

 

 

 

* These are user-programmable parameters through the Craft Interface.

Table 558-2. Virtual Circuit Default Assignments

VIRTUAL

CIRCUIT

LOGICAL

 

CIRCUIT

TYPE

CHANNEL #

APPLICATION

1

PVC

1

TL1

 

 

 

 

2

PVC

2

Craft

 

 

 

 

3

SVC

N/A

N/A

 

 

 

 

Note: Autonomous messages are always sent except when inhibited by the TL1 INH-MSG command.

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© 2000, ADC Telecommunications, Inc.