AT&T ENGINEERING REQUIREMENT CHANGE NOTIFICATION - ATT-TP-76400-155

TO: ALL AT&T ENGINEERING SUPPLIERS Date: 11/30/15

EFFECTIVE DATE: 5 days from posted date or as per Supplier’s Contract

Submitter’s Name: Donato C. Mitrano

TP: TP76400 Subject: Spare Fibers Action: Add: Modification: Delete:

Section: 9 Section Title: Cross-Connect Systems

Subsection: 6 Section Title: Fiber Distributing Frames (FDF)

Subsection: 6.4 Subsection Title: The FDF

Prior to Change:

6.4.14  Under no condition, unless for testing or trouble shooting purposes, shall fibers be left UNTERMINATED at any Fiber Optic Termination Panel (FTP). Examples of FTP’s would include but may not be limited to FDF’s, LGX’s FDP’s, FIP’s or Fiber Drawers.


Any temporary test patch or loop back setup for testing or trouble shooting purposes shall not be left up more than 24 hours unless concurred by the GNFO. Any loopbacks, which are placed on the LGX at each end terminal site until integration testing can perform at either end and cleared with the GNFO, is permitted. In these cases, a tag must be applied with the OTV name, order number and date applied.


And, all fibers removed (unterminated) for testing or trouble shooting purposes shall have dust caps placed over the end of the fiber as well as any vacated jack/port position a dust cap shall be placed on that jack/port position.


Any fibers which are left as spares and are bagged and tagged and are required by the Telco order to be left on site are also permitted.

Post Change:

6.4.14  When spare fibers are required this guideline shall be followed:

1.  The IE needs to state in the TEO that any spare fibers need to be tagged and secured. The fibers at the network element shall be tagged and protected. Fibers that are spare at both ends would not be assigned to ports in the engineering records. However, they could be documented in engineering records in the notes section of the fiber bay.

2.  The IE should state the required quantity of spare fibers on the TEO. If an amount is not specified, then the only spare fibers shall be the remaining fibers from a cable where the cable fiber count exceeds the number of required termination ports.

·  Example #1: The job requires that a fiber cable be run from the FDF to an HDOC panel on a Flashwave ROADM. The cable is 72-count and it attaches to a 72-port LGX panel at the FDF. However, the HDOC has only 64 ports so there will be 8 spare fibers at the ROADM end.

·  Example #2: 36 fiber connections are required between the FDF and a given Network Element. A fiber cable is required. At the FDF, the cable is to be attached to a 72 port panel where the first 12 ports are already in use. A 48-count cable would be installed (since 36-count cables are not available) but there would be 12 spare fibers unassigned at either end.

·  Example #3: Six fiber connections are required between the fiber frame and a Network Element. Two quad jumpers are run rather than three duo jumpers. There would be two spare fibers unassigned at either end.

OTV shall size the fiber cable to be as close to the desired number of fibers as possible.

3.  The OTV shall never cut off spare fibers in a cable.

It is permitted to leave any spare fibers on site which are bagged and tagged and required by the TELCO order.

Questions relative to this ERCN should be addressed to Serena Kwong at 510-796-1097

Serena Kwong

Specialist - Technical Process/Quality

Access the TP's on the Extranet Site - https://ebiznet.sbc.com/sbcnebs

Concurred

Area Mgr Eng Network Quality
Implementation Eng & Common Systems Date: 11-16-15

(Mike Cassidy)

Principal - Network Design Engineer (Subject Matter) Date: 11-06-15

(Donato C. Mitrano)

Release Approved

Specialist –Technical Process /Quality Date: 11-30-15

(Serena Kwong)

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