Common Systems Connection Standards

AT&T Services, Inc

Date: August 31, 2007

ATT-TP-76450, Issue 9

Wire and Cable with UL Flammability Ratings of CMX and CMU must not be used within AT&T central offices as UL Flammability Ratings must be MP/CM(same floor), MPR/CMR(Riser- Between Floor) or MPP/CMP(Plenum Condition).

6.11 Central Office Copper Wire and Cable

Frame Wire, DS1 Cross-Connect Wire, Switchboard Cable, Tie Cables and T1 Cable

6.12 Central Office Copper Coaxial Cable

734C/1734C, 735C/1735C Single Conductor and Multiple Conductor Coaxial Cables

6.13 Central Office Copper "Bits" Synchronous Timing Cables

1175A Red Jacketed Bits Timing Cable for all regions except Legacy AT&T, which will use gray jacketed 1175A.

6.14 Central Office Copper Wire and Cable Minimum Inside Bend Radius

For Switchboard, Shielded and Twin Conductor Cable, 5X the Cable Diameter

6.15 Central Office Copper Coaxial Cable Minimum Inside Bend Radius

For Non-Bundled 734 or 735 Type Coaxial Cable and for Bundled 734 Type Coaxial Cable, 7X the Cable/Bundle Diameter.

For Bundled 735 Type Coaxial Cable, 10X the Bundle Diameter.

6.16 Copper Cable Terminations

Copper Cable Terminations must have both toe and heel screw terminations for permanent lockdown. If a 90 degree connector is used and blocks the screw, use a clamp to permanently terminate the connector.

6.17 Cable Trays

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AT&T 76450 manual Central Office Copper Wire and Cable