Operations Interfaces
Issue 8.0 July 2002
6-23
Message-Based Operations System
Interface 6
The FT-2000 OC-48 Lightwave System provides a message-based operations
system interface to Telcordia's Network Monitoring and Analysis (
NMA
*
) and
Lucent’s Transvu II and SNC-2000 EMS operations systems. This interface uses
an X.25 protocol and the transaction language 1 (TL1) message language.
Different virtual circuits on the X.25/TL1 interface may be used to interface to
different operations systems.
The FT-2000 OC-48 Add/Drop-Rings Terminal supports two permanent virtual
circuits (PVCs) and up to six switched virtual circuits (SVCs). The OS type and the
associated TL1 autonomous messages are provisionable on a virtual circuit basis
using the SECURITY-Set-Security-Port CIT-PC command or in Release 7.2
and later, the ENT-CID-SECU TL1 command. The OS type is a filter that
determines the types of TL1 autonomous messages that are transmitted on a
virtual circuit to the OS. The calling address is also provisionable for each
switched virtual circuit using the SECURITY-Set-Security-Port CIT-PC
command or in Release 7.2 and later, the ENT-CID-SECU TL1 command. The
calling address is used to determine the X.25 logical channel number for switched
virtual circuits. There is a fixed association between permanent virtual circuits and
X.25 logical channel numbers. The interface operates over a synchronous line at
1200 to 19,200 baud.
In Release 5 and later releases, the FT-2000 OC-48 Add/Drop-Rings Terminal
provides a security function for the X.25/TL1 interface to protect against
unauthorized access to the system functions (for example, provisioning). Logins,
passwords, functional capabilities, authorization levels, and access to the system
capabilities are provided. For more information about security, refer to Volume I,
Section 8, "Administration and Provisioning."
The FT-2000 OC-48 Lightwave System supports an X.25/TL1 interface to report
alarm and status conditions and performance monitoring data to Telcordia’s
NMA
and Lucent’s Transvu II and SNC-2000 EMS operations systems. The X.25/TL1
interface provides significantly more detailed information, such as identifying
specific circuit packs and facilities, than the parallel telemetry or serial telemetry
(TBOS) interfaces. The TL1 messages are based on Telcordia’s
TR-TSY-000833, Issue 3, Rev. 1.
â€
In Release 4.1, the FT-2000 OC-48 Add/Drop-Rings Terminal may operate as a
gateway network element (GNE) that serves as a single interface to the local X.25
message-based operations system for all the FT-2000 OC-48 Add/Drop-Rings
Terminals in a ring network. One or more FT-2000 OC-48 Add/Drop-Rings
* NMA is a trademark of Telcordia Technologies, Inc.
†Where TR-TSY-000833, Issue 3, Rev. 1 was deficient, the FT-2000 OC-48 Lightwave
System conforms to Telcordia’s TR-NWT-000833, Issue 4.
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