Alcatel-Lucent 1665 Installation Manual page 426

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Service Line
On a Alcatel-Lucent 1665 DMX, 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, A-1, B-1, C-1, or D-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.
Small Form Pluggable (SFP)Optics
SFP optics are used on the LNW37/45/49/70/73/74 packs. SFP optics are "pluggable" optics. This
means that the circuit pack does not come equipped with optics. The customer orders the number
and type of optics required at the time of installation. Additional optics can be ordered as new
services are required. Thus Alcatel-Lucent 1665 DMX interface density is made scalable to meet
the unique needs of each customer. The SFP optics also allow for some versatility in the span
lengths and rates that can be covered by the same pack. The SFP optics adhere to Telcordia GR-253
and ITU G.957 standards.
Single 0x1 Cross-Connection
In a dual-homed application, the Alcatel-Lucent 1665 DMX 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 1665 DMX 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 DDM-2000 FiberReach, OC-3 Multiplexer, or OC-12
Multiplexer serves as a Alcatel-Lucent 1665 DMX host supporting up to six OC-3 or 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.
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GL - 2 6
Terms and definitions
365-372-304R7.1
Issue 2 March 2008