Element Manager User’s Manual Nimbra OneSerie
Trunks
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97
©2006 Net Insight AB, All rights reserved
Editing the OC-3/STM-1 Trunk Module
(DTM 150 Trunk Module)
The Read-only parameters are:
Parameter name
Description
Interface name
The interface id, 8b10b or Sonet/sdh. Written
as “nameX:Y” Where X is position of the card
and Y position of the port.
Oper. status
The operational status of the board.
Description
The number of slots available for
transmission on this interface.
Speed
The capacity.
The configurable parameters for the OC-3/STM-1 Trunk Module are:
Parameter name
Description
Suppress Alarms
When the service is up and running as
intended, enable the alarms for the service by
uncheck the Suppress alarms for;
All: When marked, all alarms are suppressed.
AIS: Alarm indication signal.
RDI: Remote defect indicator.
Default is that the alarms are suppressed.
I.e. you must uncheck the boxes to receive
the alarms!
The Advanced parameters:
Parameter name
Description
Transmit sync source
Selects whether to retrieve the transmitting
bit-clock for the interface from local oscillator
(interface) or from the bit clock received from
the remote node (loop). This shouldn’t be
confused with the 8 kHz frame clock.
H1 SS bits
Differences between Sonet and SDH.
Sets value of the SS bits in the H1 byte in the
Sonet/SDH section overhead. Older
Sonet/SDH equipment may require other
value than the default.
00 Sonet
10 SDH
Signal failure filter period
Delay time for 1+1. The time that the nodes
waits for underlying network
(SDH/SONET/WDM) to re-establish
connection. In order to avoid a switch over.
This parameter can also be used to allow
certain amount of errors without tearing down
channels or a certain trunk.
The Alarms parameters are presented at the bottom of the table as:
Parameter name
Description
Unequipped (UNEQ)
Unequipped, signal for no service configured.
Los of signal (LOS)
Loss of signal. No signal detected on
SONET/SDH network interface, no light in the
fiber.
Los of frame (LOF)
Loss of frame. Unable to align SONET/SDH
frame, no light in the fiber.
Los of pointer (LOP)
Loss of pointer
No pointer for where payload is.
Alarm indication signal, line
(AIS-L)
Alarm indication signal, line, defect detected
by upstream SONET/SDH network interface.
Summary of Contents for Nimbra 300 Series
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