TC Systems, Inc. South Carolina - AT&T Clec Online

SS7 Signaling System 7
SSP Switching Service Point
STP Signaling Transfer Point
STPS Signaling Transfer Point Switch
STS Synchronous Transport Signal
SWA Interexchange Carrier Switched Access
TAFI Trouble Analysis Facilitation Interface
TAG Telecommunications Access Gateway
TC Transaction Code
TCAP Transaction Capabilities Application Port
TELRIC Total Element Long Run Incremental Cost
TGSR Trunk Group Service Request
TIA/EIA Telecommunications Industries Association/Electronic
Industries Association
TLN Telephone Line Number
TNS Transit Network Selection
TOPS Traffic Operator Position System
TR Technical Reference
TR Technical Requirements
TS Tandem Switching
TSGR Transport System Generic Requirements
UCL Unbundled Copper Loop
UDL Unbundled Digital Loop
UDLC Universal Digital Loop Carrier
ULM Unbundled Loop Modification
UNE Unbundled Network Element
UNE-L Unbundled Network Element-Loop
UNTW Unbundled Network Terminating Wire
USEPA US Environmental Protection Agencies
USL Unbundled Subloop
USLC Unbundled Subloop Concentration System
USOC Universal Service Order Code
UVL Unbundled Voice-grade Loop
V&H Vertical and Horizontal
VOIP Voice Over Internet Protocol
WTN Working Telephone Number
xDSL Digital Subscriber Line
Attachment 12
Page 9
Other acronyms used but not defined in this Agreement that are not included in this list, shall
have the meanings ascribed to them in the Act, the rules and regulations of the FCC or the
Commission. Other acronyms used in this Agreement that are not defined or ascribed as
stated above shall be construed in accordance with their customary usage in the
telecommunications industry.
CCCS 407 of 433