Lucent Technologies FT-2000 OC-48 - TL1;X.25 Interface; General

Technical Specifications
Issue 8.0 July 2002
10-43
TL1/X.25 Interface 10
General 10
FT-2000 OC-48 Lightwave System supports an TL1/X.25 interface to report alarm
and status conditions and performance-monitoring data to operations systems
(OS) such as Telcordia’s
NMA
*
OS. (See Telcordia’s SR-STS-OO1665 for a list of
NMA releases compatible with the FT-2000 OC-48 Lightwave System.) The
FT-2000 OC-48 Lightwave System TL1 messages are based on Telcordia's
TR-TSY-000833, Issue 3, Rev. 1.
†
The X.25/TL1 interface supports two permanent virtual circuits (PVCs) and up to
six switched virtual circuits (SVCs). Every virtual circuit may be used to issue TL1
commands to the FT-2000 OC-48 Lightwave System and obtain responses. The
ability of virtual circuits to send autonomous TL1 messages varies with the
FT-2000 OC-48 Lightwave System release used.
TL1 Autonomous Messaging in Release 4.1 and
Earlier 10
For releases through Release 4.1, the FT-2000 OC-48 Lightwave System
supports two PVCs (Table 10-18). Only PVC #1 can send autonomous messages.
The FT-2000 OC-48 Lightwave System through Release 4.1 also supports up to
six SVCs (Table).
* Trademark of Bell Communications Research, 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.
Table 10-18. X.25/TL1 Interface – PVC Assignments (Through Release 4.1)
Logical
Channel # Use
1 Autonomous and Command/Response Messages
2 Command/Response Messages