Common Systems Connection Standards AT&T Services, Inc
Date: August 31, 2007 ATT-TP-76450, Issue 9
Copyright ©2004 – 2006, AT&T Knowledge Ventures
All rights reserved
Page 16
4.11 Housekeeping/Overhead Alarm Inputs
All network elements that will be deployed in a non-central office environment, such as RT,
CEV, Cabinet, etc., that are intended to carry local power and environmental alarms to a
surveillance center must have at minimum sixteen (16) housekeeping/overhead user definable
discrete alarm inputs. Although not required, an Ethernet/DCC access connection to the
overhead for this purpose is strongly desired.
5 Fiber
All Fiber Optic Standards contained herein are applicable to any manufacturer’s product that
can be administered or managed by AT&T personnel.
5.1 Fiber Optic Cable
Fiber Optic cables/jumpers shall adhere to BELLCORE Standards as defined in GR-409,
Generic Requirements for Premises Fiber Optic Cable.
5.2 Optical Cable/Jumpers & Connectors
Fiber Cross Connect Cables/Jumpers and Connectors shall be SingleMode.
5.3 Fiber Attenuators
Attenuators shall be for SingleMode Facilities.
5.4 Fiber Connector Boots
Fiber connector boots shall be straight and not angled.
5.5 Fiber Minimum Bend Radius
The minimum fiber bend radius shall be 1.5-inches or 10 times the cable diameter at any point
whichever is greater. Network equipment shall provide fiber management facilities that maintain
a minimum 1.5 inch bend radius from the connector until handoff to the bay or cabinet fiber
management facilities. See Figure 5-1
5.6 Maximum Fiber Connector length
The maximum fiber connector length (including boot) away from the mating connector housing
shall not exceed 2.25 inches. See Figure 5-1
