AT&T Circuit Designations
Here some abreviations AT&T uses for designating various circuit speeds.
| Circuits Ids: | |
| AQEC | 9.6K (usually not supported by Maintenance) |
| FDEC | Analog, Interstate |
| FDDC | Analog, Intrastate |
| AREC | 56K, Interstate |
| ARDC | 56K, Intrastate |
| DHEC | T1, Interstate |
| DHDC | T1, Intrastate |
| ACEC | ACCU-Ring |
| AGEC | OC3 Service Channel |
| DNEC | T45 |
| FDEC | Ring Down Circuit |
| Indicator | Speed | Channel | |
| AQEC | 9.6K | 1 | |
| AREC | 56K | 1 | |
| DVEC | 64K | 1 | |
| DXEC | 128K | 2 | |
| IAEC | 192K | 3 | |
| DZEC | 256K | 4 | |
| ICEC | 320K | 5 | |
| DCEC | 384K | 6 | |
| IDEC | 448K | 7 | |
| DEEC | 512K | 8 | |
| IEEC | 576K | 9 | |
| IFEC | 640K | 10 | |
| IGEC | 704K | 11 | |
| DTEC | 768K | 12 | |
Frame Relay Tariff Components
Tariff 9 = AC Access Connection
M24
IOC Interoffice Channel
Tariff 11 = Local Channel
ACF Access Coordination Function
Tariff 4 = Switched Digital Service (ports/pvcs)
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