PCR. 1.pico-processor command register
2.power check reset
PICA. process and intertask communication
architecture
PMH. problem management hardware
PN. part number
PNL. control panel
POR. power-ON reset
PP. pico-processor
PPB. primary power box
PPC. PowerPC (system card of MAE)
PRC. processor
PRDA. packet request device (processor)
address
PROM. programable read-only memory
PS. power supply
PSI. packet switch interface
PSN. public switched network
PTCE. product-trained CE
PTF. program temporary fix
PTT. Post, Telephone and Telegraph (agency)
PU. physical unit
RETAIN. Remote Technical Assistance Informa-
tion Network
RNR. receiver not ready
RPL. remote program load
RPO. remote power-off
RSC. remote service center
RSF. remote support facility
RVX. stands for RS232, RS422, V.24-35,
X.21-2x connections
SAC. switch adapter card
SATS. specific assurance tests
SBA. switch bus adapter
SBI. switch bus interface
SC. switch control
SDLC. synchronous data link control
SIE. switch interface extender
SL. service logic
SNA. Systems Network Architecture
SNMP. Simple network management protocol
SPD1. signal and power distribution type 1
SPD2. signal and power distribution type 2
SPDL. signal and power distribution card in LCB
SPS. service and power support
SQL. structured query language
SRC. system reference code
SSA. system service architecture
SSCP. system services control point
STCn. signal transfer card n
SSS. subsystem support service
Systems Network Architecture (SNA). The
description of the logical structure, formats, proto-
cols, and operational sequences for transmitting
information through a user application network.
The structure of SNA allows the users to be inde-
pendent of specific telecommunication facilities.
TB. terminator block
TDM. time division multiplexing
TDR. technical data record
TERC. terminator card
Glossary
X-5
Содержание 3746-900
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