255-700-714R11.0
3-35
PacketStar
®
PSAX 1-Port Channelized OC-3/STM-1 CES Module User Guide
, Issue 1
Release 11.0.0
Chapter 3 Configuring the OC-3 Mode Ports and Channels Using the Console
Configuring J1 Trace
Configuring J1 Trace
The J1 and J2 byte configuration ensures that data reaches the correct desti-
nation and also helps in long term data monitoring.
Perform the following procedure to configure the J1 Trace on the Channel-
ized OC-3 SM STS1 Port Configuration window.
Begin
1
From the OC-3 SM Port Configuration window (see Figure 3-8), set the
J1 Trace field to
Enabled
(see Table 3-16).
Note:
From the Channelized OC-3 SM Port Configuration window,
verify that the J1 Trace field is set to
Enabled
.
[Working Line]
Default:
NoAlarm
Range: N/A
Format: Predefined
Indicates the status of the port on the working module.
NoAlarm
No alarms exist on the working module.
ModuleFailure
The working module has failed.
[Protection Line]
Default:
NoAlarm
Range: N/A
Format: Predefined
Indicates the status of the port on the protection mod-
ule.
NoAlarm
No alarms exist on the protection module.
ModuleFailure
The protection module has failed.
[APS Status]
Default:
NoFailure
Range: N/A
Format: Predefined
Indicates whether a switchover has occurred from one
module to the other module in the pair.
*
For the STM-1 MSP and STM-4 MSP modules, the ITU-T G.841 Transmission Systems and Media, Digital
Systems and Networks, Section 7.1 (formerly G.783 Annex A) mandates channel 0 to indicate the switch
configuration and channel 1 to indicate the bridge configuration. The PSAX system is compliant with
G.841 Section 7.1 by using channel 0 and 1 coding in both the uni- and bi-directional modes. For the OC-
3c APS and OC-12c APS modules, the Telcordia GR-253-CORE Synchronous Optical Network (SONET)
Transport Systems: Common Generic Criteria (formerly G.783 Annex B) mandates channel 1 to indicate
the switch configuration and channel 2 to indicate the bridge configuration (0 indicates no request). The
PSAX is not compliant with G.841 Annex B. The APS and MSP protocol are using the K1/K2 byte in the
SONET/SDH overhead to exchange information between multiplexed section endpoints. The protocols
are using bit 6 to 8 of the K2 byte in a different way: The STM-1 MSP and STM-4 MSP modules are using
these bits from the K2 byte to indicate an MS-AIS or MS-RDI alarm. The OC-3 APS and OC-12 APS mod-
ule are using these bits from the K2 byte to indicate the mode of operation. On the Msp-STM-1SM MSP
Configuration menu, the PSAX system menu displays the K1/K2 byte values it is transmitting and/or
receiving, but those values do not include the values for the K2 bits 6-8. For interworking between a CBX
500® system and a PSAX system, the CBX and the PSAX use different state machines for bi-directional
transmission, causing the MSP function to lock up. In links from the PSAX to the CBX, the state machines
are compatible for unidirectional links.
Table 3-15. Channelized OC-3 MM APS Configuration Window Field Descriptions (Continued)
Field Name
Field Value
Description
