SDH
See “Synchronous Digital Hierarchy” (p. GL-28) for definition.
secure shell (SSH)
A secure method of transmitting data.
segment
A pair of OSP fibers connecting two sites.
SELV
Safety extra low voltage.
service affecting (SA)
Refers to a condition that impacts or interferes with network service.
Service Level Agreement (SLA)
A contract between a network service provider and a customer that specifies, usually in
measurable terms, what services the network service provider will provide.
services
Within the 1830 PSS-36/PSS-32/PSS-16/PSS-4 system, services can be offered directly to end
customers or be used internally to a network as transport infrastructure.
SFC
See “static filter, CWDM” (p. GL-27) for definition.
SFD
See “static filter, DWDM” (p. GL-27) for definition.
SFP
See “small form-factor pluggable module” (p. GL-26) for definition.
shared risk group (SRG)
A shared risk group is a group of items that are likely to be affected by a single fault. The items
therefore share the risk of experiencing the fault.
shelf
A shelf is a mechanical facility that is in general a housing for circuit packs. Shelves are housed in
Bays.
An 1830 PSS-36/PSS-32/PSS-16/PSS-4 node consists of one or more physical shelves equipped
with cards. The shelf provides a chassis or cage with a backplane that can contain multiple cards.
The shelf is mounted in a rack. Each shelf has a shelf controller card, plus its redundant mate.
Every node has one shelf that has its shelf controllers designated as the master controller for the
node. The node appears as a single point in the network topology to the network management
system. Connections between nodes use network links. See “node” (p. GL-18) for related term.
shelf controller (SC)
The SC card in a 1830 PSS-36/PSS-32/PSS-16/PSS-4 shelf.
Glossary
....................................................................................................................................................................................................................................
....................................................................................................................................................................................................................................
1830 PSS-36/PSS–32/PSS-16/PSS-4
8DG60888CAAA Release 3.6.0 and 3.6.1
Issue 1 June 2011
GL-25
To Next Page
Loading...
