Table of Contents
Advertisement
Terms and definitions
............................................................................................................................................................................................................................................................
SEO - Single-Ended Operations
The maintenance capability that provides remote access to all Alcatel-Lucent 1850 TSS-60 systems
from a single location over the DCC.
Service Line
On a Alcatel-Lucent 1850 TSS-60 system, a service (or "working") line is a pair of fibers (one
transmit and one receive) that terminate on an OLIU circuit pack in the Main-1, D-1, or G-1 slots.
As defined by the SONET standard, the SONET APS channel is not defined on a service line. See
Protection Line.
SES - Severely Errored Seconds
This performance monitoring parameter is a second in which a signal fail occurs, or more than a
preset amount of coding violations (dependent on the type of signal) occurs.
SF - Super Frame
The format for DS1 signals.
Shelf ID
A switch-settable parameter with values from 1 to 8. Used to log into a selected shelf by using the
CIT.
Single 0x1 Cross-Connection
In a dual-homed application, the Alcatel-Lucent 1850 TSS-60 uses a single 0x1 cross-connection
to map the VT1.5 channels between the DDM-2000 FiberReach, OC-3 Multiplexer, or OC-12
Multiplexer and the Alcatel-Lucent 1850 TSS-60 rings. This single 0x1 architecture maps low
speed to high speed on a specified ring rotation. The high speed to low speed drop is made on the
same specified ring with no path switching. Protection is provided at the VT1.5 end points.
Single Homing
A network topoly in which a single Alcatel-Lucent 1850 TSS-60 serves as a DDM-2000
FiberReach, OC-3 Multiplexer, or OC-12 Multiplexer host supporting up to eight OC-3 or four
OC-12 rings.
Standby
Standby identifies a 1+1 protected OC-N line which is not currently selected by the receiver at
either end as the payload carrying signal, or 1x1 or 1xN protected circuit pack that is not currently
carrying service. See Active.
Status
The indication of a short-term change in the system.
STS, STS-n - Synchronous Transport Signal
The basic building block signal with a rate of 51.840 Mb/s for an STS-1 signal and a rate of n times
51.840 Mb/s for an STS-n signal.
STS-1 SPE - STS-1 Synchronous Payload Envelope
A 125-microsecond frame structure composed of STS path overhead and the STS-1 payload.
STS-3c
Synchronous Transport Level 3 Concatenated Signal. See OC-3c.
............................................................................................................................................................................................................................................................
GL - 2 6
365-372-603R2.0
Issue 1 January 2009
Advertisement
Table of Contents
