Tyco Electronics Galaxy SC Controller J85501F-1
Issue 13 February 2001 TL1 (Transaction Language 1) and X.25 Interface Appendix D - 1
Appendix
D
TL1 (Transaction Language 1)
and X.25 Interface
Introduction The Transaction Language (TL1) command interface for the Galaxy SC
Controller equipped with the BJH Intelligent Board enables direct
communication with a central computerized monitoring system using
TL1 commands as specified by Bellcore. In TL1 terminology, the
Galaxy SC is commonly called a Network Element (NE) and the central
computerized monitoring system is called the Operations System (OS).
This Appendix describes wiring and configuring Galaxy SC for TL1, the
relevant TL1 command format, setup procedures for the Galaxy SC, a
detailed description of the TL1 commands and messages supported by
the Galaxy SC, and pertinent Bellcore documents.
Equipment
Setup and
Installation
Galaxy SC’s X.25 connection is made through an external Packet
Assembler/Dissassembler (PAD). The PAD serves as an interface
between the asynchronous TL1 port on the Galaxy SC (AUX) and the
X.25/TL1 synchronous network.
Figure D-1 shows a block diagram of the X.25 connection. The
asynchronous connection is accomplished through an RS-485 to RS-232
converter to the Galaxy SC. The synchronous connection to the X.25
network may be user configured as either a permanent virtual circuit
(PVC) or as a switched virtual circuit (SVC). Contact your network
administrator to determine which type of connection will be provided.
Note: The RS-232/485 converter can be connected to each of ports P2
through P5 on the PAD unit. Thus, one PAD can support up to four
simultaneous X.25/TL1 connections.
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