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Abbr. NEC
Description
NEC
Abbr. PBC
Description / Remarks
PBC
RAS Registration Admission Status Registration Admission Status
RBT Ringback Tone
RC Room Cutoff
REN Ring Equivalence Number
RLS Release
ROT Reorder Tone
RPIM Remote PIM
RSC Route restriction Class
RST Restricted
RTP Real Time Protocol
SCF Switch Control Facility OAI related.
SDT Special Dial Tone
SLT Single Line Telephone Analog telephone
SMDR Station Message Detail Recording FDCR Full Detailed Call Recording
SMFN Status Monitor Facility (Notification) OAI related.
SMFR Status Monitor Facility (Request)
SOC System on chip
SP Soft Phone
SPID Service Profile ID (ISDN) BSP-ID Basic Service Profile ID (ISDN)
SPN Special Part Number
SSFM Service Set facility Monitor OAI related.
SSFR Service Set Facility Request OAI related.
SST Service Set Tone
STA Station
STN Station
TAH Trunk Appearance Hold
TAS Trunk Answer Any Station Pickup incoming calls in night mode
TCF Terminal Control Facility OAI related.
TCM (Deluxe) Travelling Class Mark
TDM Time division multiplexing
TDS Time division switching
TDSW Time Division Switch
TIC (Individual) Trunk identification Code Line numbers of trunk lines
TMF Terminal Multi-information transfer
Facility
OAI related.
TMSF (Terminal) Mode Set Facility OAI related.
TNT Tone/Music source interface
TRF Transfer
TSW Time Switched
UAP User Application Processor
UCD Uniform Call Distribution Basic ACD. Distribution of calls based on
longest idle.
UNP Uniform Numbering Plan (Network) numbering plan
USOC User Service Order Code Other word for REN
VC Voice Compression
VCT Voice CODEC circuit card
VDSL Very high data rate Digital Subscriber
Line
VM Voice Mail
VOIP Voice over IP VOIP Voice over IP
WAN Wide Area Network WAN Wide Area Network
WATS Wide Area Telephone Service Specific part of PSTN, US only
WCS Wireless Communication System "Analog DECT"
WH White
WU Wake up
ZT Zone Transceiver For Wireless system
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