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List of terms
Nortel Multiservice Switch 7400/15000/20000
Terminology
NN10600-005 7.2S1 Standard
PCR7.2 and up March 2006
Copyright © 2006, Nortel Nortel Confidential
P-SPVC
See permanent switched permanent virtual circuit (P-SPVC) (page 100).
P-switched permanent virtual circuit (P-SPVC)
See permanent switched permanent virtual circuit (P-SPVC) (page 100).
PBX
See private branch exchange (PBX) (page 105).
PCM
See pulse code modulation (PCM) (page 109).
PCR
See peak cell rate (PCR) (page 100) or Passport Carrier Release (PCR)
(page 97).
PCS
See processor control system (PCS) (page 106).
PDU
See protocol data unit (PDU) (page 107).
PDV
See packet delay variation (PDV) (page 95).
PDVT
See packet delay variation tolerance (PDVT) (page 95).
PDH
Plesiochronous Digital Hierarchy. An electrical transmission format. The
precursor to SDH.
PDR
See protected default route (PDR) (page 106)
PE
See “provider edge router (PE)” (page 107).
PE’
See “Carrier’s Carrier provider edge router (PE’)” (page 24).
PEC
See product engineering code (PEC) (page 106).