OC-1 |
See Optical Carrier Level.
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OC-3 |
See Optical Carrier Level.
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On-Hook | The idle condition of voice path regardless of its transport type.
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Operations Support System (OSS) | Refers to systems (both Verizon systems and those of external vendors such
as Telcordia) that provide operations services such as workforce management,
trouble processing, dispatch, customer line records, testing, etc.
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Operator Services | Any of a variety of telephone services that need the assistance of an operator
or an automated "operator" (that is, using interactive voice response technology
and speech recognition). Such services include collect calls, third party billed
calls and person-to-person calls.
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Optical Carrier Level | A SONET term. A range of
bandwidths as specified in a Telcordia
Technologies (formerly Bellcore) document and associated ANSI
standards. For example: Optical Carrier Level 1 (OC-1)--The optical signal that
results from an STS-1 signal conversion. Optical Carrier level 3 (OC-3)--An
optical carrier with three 51.84M bps multiplexed OC-1 circuit streams on an
underlying SONET/SDH circuit. Optical Carrier Level 3-c (OC-3c)--An OC-3 circuit
with the three OC-1 lines concatenated into a 155.52M bps circuit; used in ATM
transmission. See ATM and OQS
(Open Query System).
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