| AAA |
Automated Airline Assignment |
| AMC |
Air Mail Center |
| AMF/C |
Air Mail Facility/Center |
| APC |
All-Purpose Carts |
| BCSS |
Business Customer Support Systems |
| BMEU |
Business Mail Entry Unit |
| CET |
Critical Entry Time |
| CIN |
Container Identifier Number |
| CIN |
Content Identification Number |
| D&R |
Distribution & Routing |
| DMM |
Domestic Mail Manual |
| DMU |
Detached Mail Unit |
| DSS |
Desktop Shipping System |
| EDRD |
Engineering Design Requirements Document |
| EIA |
Electronic Information Access |
| FAA |
Federal Aviation Administration |
| FASWYB |
Fully Automated Scan-Where-You-Band |
| FCM |
First-Class Mail |
| FCS |
Factory Control System |
| HCR |
Highway Contract Route |
| HVSS |
High-Volume Shipping System |
| IPS |
In-Plant Support |
| MMIC |
Major Mailer Interface Channel |
| MPC |
Mail Processing Code |
| MTE |
Mail Transport Equipment |
| MVS |
Motor Vehicle Support |
| NAM |
National Account Manager |
| NASS |
National Air and Surface System |
| NCSC |
National Customer Support Center |
| P&DC |
Processing & Distribution Center |
| PASS |
PostalOne! Assignment Support System |
| RCSC |
Rates and Classifications Service Center |
| T/C |
Transaction Concentrator |
| TCSS |
Transportation Contract Support System |
| TPH |
Total Pieces Handled |
| USPS |
United States Postal Service |