Alcatel-Lucent 9500 MXC User Manual page 434

Chapter 7. Node and Terminal Plug-ins
Vol. IV-7-44
5. Select NMS Transport.
When the DAC 155oM is used to close a super PDH ring with fiber, the
NMS must be mapped into the SONET/SDH frame. In most instances the
higher capacity MSOH should be used, as the 9500 MXC network is the
source and the sink of the NMS signal (there is no competing use of the
overhead).
When the DAC 155oM is used at the edge of a network (connecting a 9500
MXC PDH network to an SDH trunk or ring) the network operator may wish
to map the NMS into the SONET/SDH frame to carry it to the ultimate
destination of this tributary, but in doing so the overhead bits available to
carry this overhead, D1-D3 (RSOH) or D4-D12 (MSOH), must first be
considered, as the overhead may already be in use for other purposes. It must
also be understood that to enable extraction of the NMS information, the
terminating equipment at the ultimate destination of the NMS must be 9500
MXC.
The selection options are:
• None. No provision for 9500 MXC NMS transport is provided on the optical
interface.
• Use RSOH. 9500 MXC NMS data is assigned to the Regenerator Section
Overhead.
• Use MSOH. 9500 MXC MMS data is assigned to the Multiplexer Section
Overhead.
6. Select Signal Degrade Threshold to enter the required BER option.
When the threshold is exceeded an alarm is raised in the Events Browser and
Alarms screens.
7. Go to the Bus Ports screen.
8. Select Bus Port Type. Options of E1 or DS1 are provided:
• When E1 is selected (default), the DAC 155oM is configured as a
1xSTM1-to-63xE1 multiplexer.
• When DS1 is selected it is configured as an OC3-to-84xDS1 multiplexer.
The selection is confirmed in both the Line Interface and Bus Ports screens.
Alcatel-Lucent