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61185001L1-1 MX2810 M13 User Manual 9-1

Chapter 9

Transaction Language 1 (TL1)

INTRODUCTION

Transaction Language 1 (TL1) is a BELLCORE standard used in the

input and output messages that pass between Operations Systems

(OS) and Network Elements (NE) in telecommunication networks.

It was developed to standardize equipment surveillance and

memory administration, and to test with a common format.

This release of TL1 primarily supports the interactive and

autonomous retrieval of system events as part of a valid TL1

session.

OVERVIEW

TL1 is an ASCII based language that supports both command-

response and autonomous (NE) message generation. Commonly,

TL1 is used over a X.25 packet network but is completely

independent of any physical layer protocols. For the MX2810, TL1

is implemented as a TELNET session running over Ethernet or over

an X.25 packet network.

The MX2810 supports an RS-232 compatible serial interface to be

used in conjunction with the X.25 network. The unit includes PAD

functions onboard so an external PAD is not required for operation

with the X.25 network (an external PAD may be necessary when the

unit is being used with a test network with a PC.) Physical access

uses a 25-pin female DB-25 connector (Network Management) on

the rear of the MX2810. The X.25 connector pin assignments are

detailed in Table 1. This port operates as a DTE and is configured

for the following settings:

1 2 ... 112 113 114 115 116 117 118 119 120 121 122 ... 203 204

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ADTRAN 1200287L1 Manual de usuario Pagina 117