OnSite Series Getting Started GuideC • Terms and Acronyms
Abbreviation | Meaning |
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L |
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LCAS | Link Capacity Adjustment Scheme |
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LFD | Loss of Frame Delineation |
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LOF | Loss of Frame |
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LOP | Loss of Pointer |
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LP | |
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M |
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MS | Multiplex Section |
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N |
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NEBS | Network Equipment Building System |
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NEC | National Electric Code |
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P |
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PBX | Private Branch Exchange |
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PC | Personal Computer |
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PDH | Plesiochronous Digital Hierarchy |
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PJC | Pointer Justification Count |
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PM | Performance Monitoring |
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POST | |
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ppm | parts per million |
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PRC | Primary Reference Clock |
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PRI | Primary Rate Interface |
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PSC | Protection Switching Count |
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PSD | Protection Switching Duration |
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R |
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RS | Regenerator Section |
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RSOH | Regenerator Section Overhead |
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RU | Rack Unit (1.75 inches) |
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S |
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SD | Signal Degrade |
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SDH | Synchronous Digital Hierarchy |
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SEC | Secondary source (also Synchronous Equipment Clock) |
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SES | Severely Errored Second |
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SF | Signal Failure |
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SNMP | Simple Network Management Protocol |
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SOH | Section Overhead |
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SSM | Synchronization Status Messaging |
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SSU | Synchronization Supply Unit |
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Service provider tag | |
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Synchronous Transport Module level 1 | |
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Abbreviations | 66 |
