Acronyms

The following table provides information about the acronyms and the terminology used in the document.

Table - Acronyms

Acronym Definition
AC Area Code
CAS Customer Access Support
DPC Destination Point Code
GTA Global Title Address
GTT Global Title Translation
HLR Home Location Register
IEC International Escape Code
LNP Local Number Portability
MDN Mobile Directory Number
MNPCRP MNP Circular Route Prevention
MTP Message Transfer Part
NEC National Escape Code
NP Number Portability
RN Routing Number
RTDB Real Time Database
SCCP Signaling Connection Control Part
SMSC Short Message Service Center
SR Service Request
SRF Signaling Relay Function
UDT Unit Data Transfer
XUDT Extended Unit Data Transfer