AAC / CellSMART DS3 Physical Layer Module
- Specifications
- Ordering Information
- Support Information
- Datasheet
| Common Requirements | |
| Framing format | M23 or C-bit parity |
| Interface connector | 75 ohm coaxial BNC connectors |
| Line code | B3ZS |
| Line impedance | 75 ohms (nominal) |
| Line rate, internal clock | 44.736 Mbps plus or minus 20 ppm |
| Input Requirements | |
| Jitter tolerance | Conforms to ITU-T Recommendation G.824 (03/93), Section 3.1.1, Table 2 |
| Signal level | Recover DSX-3 signals from 0 to 450 ft. of 75 ohm coaxial cable or equivalent |
| Output Requirements | |
| Line build out: DS3 high | For cable length 225 to 450 feet |
| Line build out: DSX-3 | For cable length 0 to 225 feet |
| Output jitter generation | Conforms to ITU-T Recommendation G.824 (03/93), Section 2.1, Table 1 |
| Output level V, o | 0.36 < Vo < 0.85 V peak (As measured at the center of the pulse. The test signal should contain isolated ones.) at the cross-connect |
| Pulse shape | Conforms to TR-NWT-000499, Issue 5, Figure 9-6 |
| Standards Compliance | |
| Meets applicable requirements of the following standards/generic requirements | ANSI T1.102-1993, Standard for Telecommunications, "Digital Hierarchy--Electrical Interfaces, " December 8, 1993. ANSI T1.107a-1990, Standard for Telecommunications, "Digital Hierarchy--Supplement to Formats Specification, (DS3 format applications), " August 16, 1990. ANSI T1.404-1994, Standard for Telecommunications, "Network-to-Customer Installation--DS3 Metallic Interface, " August 30, 1994. ITU-T G.824-1993, "Digital Networks--The Control of Jitter and Wander within Digital Networks which are Based on the 1544 kbit/s Hierarchy, " March 1993. Bellcore TR-NWT-000499-Issue 5, "Transport Systems Generic Requirements (TSGR): Common Requirements, " December 1993. |