Administration; Pcm Companding Law - Nortel Meridian 1 Succession 1000 Manual

Administration

PCM companding law

Digital Trunk and Primary Rate Interface
For digital Central Office trunk routes:
• DCOdigital or combination CO trunk
• DTOdigital or combination toll office trunk
For 1.5 Mbit PRI TIE trunk routes:
• PRI B-channel port classification
• DTTdigital or combination TIE trunk
• DCTcombination satellite PBX TIE trunk
• DSTdigital satellite PBX TIE trunk
For 1.5 Mbit PRI COT, FEX, DID WAT trunk routes:
• PRI B-channel port classification
• DCOdigital or combination CO trunk
• DTOdigital or combination toll office trunk
The Pulse Code Modulation (PCM) companding law is the method used to
convert analog signals to digital signals and vice versa. Succession 1000M,
Succession 1000, and Meridian 1 can accommodate a number of different
PCM companding laws:
• µ-Law
• A-Law inverted (Sweden only)
• A-Law even bit interleaved
The response to the PCML prompt in LD 14 defines the PCM companding
law used by the Digital Trunk Interface (DTI) or Primary Rate Interface (PRI)
channel.
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Transmission Parameters