DETAIL ENGINEERING REQUIREMENTS Section 9, ATT-TP-76400
AT&T January, 2012
6.6.2 Mechanical Splices will only be permitted on an exception basis for the immediate service
restoration of damaged facilities and should remain in place for no more than 30 days.
6.6.3 Biconic Splices shall not be used for new Fiber Optic Services.
6.7. Attenuators
6.7.1 Attenuators shall be placed at the far end of the circuit from the optical transmitter.
6.7.2 Fiber optic attenuators may be placed at either the network element end or at the FDF end of
the circuit and shall be placed on the receive side.
6.7.3 Attenuators shall not be placed between two fiber optic jumpers in the Fiber Protection
System (Yellow Raceway) or the FDF troughs.
6.8. FDF References
ATT-TELCO-IS-002-316-011, AT&T SingleMode Fiber optic Splitters
ATT-TELCO-IS-002-316-026, AT&T SingleMode Passive Wave Division Multiplexer (WDM)
for the FDF
ATT-TELCO-IS-002-316-043, AT&T Fiber Distributing Frame Deployment Standards
ATT-002-316-053, AT&T-Fiber Protection System Standards
ATT-TELCO-IS-002-316-066, AT&T-Breakout Bay Provisioning for the Nortel OPTera
Connect DX System
ATT-TELCO-IS-002-316-072, AT&T-BPON FTTH Provisioning AT&T West (California) Only
ATT-TELCO-IS-002-316-078, AT&T Fiber Connector/Mode Policy
ATT-TELCO-IS-002-316-079, AT&T Fiber Connector/Mode Policy Addendum by Applied
Services
ATT-E-00136-E, AT&T-Fiber Patch cords, Cable and Attenuators
ATT-E-01140-E-01, AT&T-Fiber Distributing Frame Drawings
ATT-C-50002-E-00, AT&T ADC Fiberguide Fiber Protection System
7 ETHERNET DISTRIBUTING FRAMES (EDF)
7.1 General
7.1.1 Ethernet signals are transported through one of two cabling media: either electrical or optical.
7.1.2 Optical Ethernet signals within the Carrier Communications Spaceor Customer Premise shall
be terminated at a Fiber Distributing Frame (FDF) location. All rules and guidelines that
define fiber requirements shall be adhered to as described in other sections of this document.
7.1.3 Electrical Ethernet signals within the Carrier Communications Space or at a customer
premise shall terminate at the Electrical Ethernet Distributing Frame (EDF). The EDF serves
as the primary interface between AT&T's Ethernet network element bay and the far end
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