ADC – Area Distribution Center
EMS – Express Mail Service
FIM – Facing Identification Mark
MPF – Mail Processing Facility
IPC – International Post Corporation
ASF – Auxiliary Service Facility
UAA – Undeliverable as Addressed
AADC – Automated Area Distributed Center
SAL – Surface Air Lifted
NDC – Network Distribution Center
MOM – Military Ordinary Mail
SCF – Sectional Center Facility
OEL – Optional Endorsement Line
DPBC – Delivery Point Barcode
MRC – Mail Recovery Center
TRACS – Transportation Cost System
VAP – Volume Arrival Profile
QBRM – Qualified Business Reply Mail
AMC – Airport Mail Center
OCR – Optical Character Recognition
PRN – Postal Routed Network
RBCS – Remote Bar Coding System
PVS – Postal Vehicle Service
HCR – Highway Contract Route
PMEMS – Priority Mail Express Military Service
AMS – Alternate Mailing System
SBP – Scan Based Payment
REC – Remote Encoding Center
PIC – Package Identification Code
AEC – Address Element Correction
CIN – Content Identifier Number
ACS – Address Change Service
MCS – Mail Classification Schedule
POM – Postal Operations Manual
RPO – Railway Post Office
IBI – Information Based Indicia
PRS – Parcel Return Services
DMM – Domestic Mail Manual
FRE – Flat Rate Envelope
AMF – Airport Mail Facility
RTHS – Robotic Tray Handling System
PME – Priority Mail Express
COD – Cash on Delivery / Collect on Delivery
MICR – Magnetic Ink Character Recognition
BMC – Bulk Mail Center
LSM – Letter Sorting Machine
FSS – Flats Sequencing System
CRM – Courtesy Reply Mail
LACS – Locatable Address Conversion System
CASS – Coding Accuracy Support System