User guide

29
Trunk Group Types Quick References
(NTP 297-YYYY-350, Translation Guides)
AI Automatic Intercept System (AIS)
AN Automatic Number Announcement
ANI Automatic Number Identification
AOSS Auxiliary Operator Services System (AOSS) Trunk Group
AOSSARU AOSS External Audio Response Unit (ARU)
AT C
Access Tandem to Carrier (Originating from SC,IT,TOPS and
Terminating to SC and IT trunk group types
A5 Two-way or Outgoing from Local to North Electric AMR5
CA Siemens ADDS Come Again Signalling for 1+, 0+, 0- calls
CELL Cellular (Bellcore type 2A interconnect to CMC switch)
DA Directory Assistance Charging
DS0 Digital Signal Level 0 (Transmission Link from SSP to STP)
ES Emergency Service Bureau
E911 Enhanced 911 Emergency Service
GERIC Incoming 1TR7 ISUP for Germany Network field trial
GEROG Outgoing 1TR7 ISUP for Germany Network field trial
GER2W Two-way 1TR7 ISUP for Germany Network field trial
GW International Gateway Trunk Groups
IBNT2, TI
TO
Integrated Business Network (IBN) 2-way, Incoming, and
Outgoing Trunk Groups
IET Inter-Exchange Tandem Trunk Group that us SRMF signalling
INT101 International 101 test line for a DMS Gateway Office
IR Intercept, Information, or Repair with no outpulsing
IS Tandem Switching — no digits incoming — route upon seizure
IT Intertoll Trunk Group
ITL2 International 102 test trunk
ITOPS International TOPS
LOOPA1
Loop-Around Test Line (NT2X75AA) and A-law
Loop-Around (NT2X75BA) Port 1
LOOPA2
Loop-Around Test Line (NT2X75AA) and A-law
Loop-Around (NT2X75BA) Port 2
LPBK Loopback Trunk
LP4W Four-Wire Digital Loopback for ISUP Trunks in a DMS-300
MAINT MAINTENANCE AND TEST TRUNK GROUPS:
DCLTONE Dialable Cable Locator Tone (NT2X90 type pack)
DTU Digital Test Unit (NT4X23AA)
ESADGTR Emergency Stand-Alone Digital Receiver (NT2X48AB)
HSET Position Headset (NT2X72, NT2X88AA or NT5X30AA)
JACK Position Jack (Local = NT1X54AA, Toll = NT2X72 type)
LTU Line Test Unit (NT2X10 and NT2X11 type circuit packs)
MONTALK Monitor and Talk for LTU (NT2X90 type circuit pack)
MTU Metallic Test Unit (Domestic = NT2X11; Intl = NT4X79)
TTT Trunk Test Transmission (NT1X90 and NT2X96 type packs)
SPARExxx Spare Trunk Groups
OCKT Open Circuit Test Trunk (NT2X71AA)
SCKT Short Circuit Test Trunk (NT2X71AA)
MTR International with Metering on Trunk Groups
NFA Network Facility Access
NU Nailed-Up Connection
OC Outgoing and Two-way from Local Office to Toll CAMA
OI Incoming Operator Verification
OOC Overseas Operator Center
OP Outgoing or 2-way from Local & Toll Offices to TOPS/TSPS
OPR International with Operator
OS Toll Completing Joint Hold
PET PCS 1900 Equal Access Trunk
PRA Primary Rate Access
PRIVLN Gateway Private Line
PX DID and DOD or both with a Digital PBX
P2 DID and DOD or both with a PBX
RC Recording Completing to a 3CL switchboard
RONI Remote Operator Number Identified (ONI) Trunk Group
ROTL Remote Office Test Line
SC Incoming and Two-way CAMA
SOCKT Transmission Tests
SPC Semi-Permanent for International Offices
TD Test Desk
TDDO Two-Stage Direct Dial Overseas
TI,TO,T2 Incoming, Outgoing, and 2-way End Office
TL CCIS Transmission Link
TOPS TOPS Trunk Group
TOPSARU TOPS External Audio Response Unit
TOPSVL TOPS Voice Link
TPS101 International 101 Test Line
TTL2 102 Test used for Carrier Milliwatt supply and Balance Test
T101 Incoming and Outgoing Trunk Group for 101 Test Line
T105 105 Test Line
UT Utility Telemetry Trunk Group
VR Verification Trunk
X75 X.75 Trunk Group for connection to a DMS Packet Handler
ZI Tandem 0+ or 0- to TOPS