Proactive fiber monitoring improves service availability, building a strong foundation for extending service offering from residential customers to enterprise connectivity and mobile backhaul. With the ADVA ALM, cable operators gain full visibility of their passive networks so that any fiber degradation is identified even before services are affected. Immediate fault isolation including precise localization of root causes happens in real time without the need for time-consuming onsite visits. This leads to faster repair cycles, which significantly increase customer satisfaction and loyalty. Cable operators can also offer services with higher availability as they maintain their physical fiber infrastructure with a field services team operating more efficiently.

1. Proactive Fiber Monitoring in Cable
Networks
June, 2017

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• Fiber Deep and R-PHY
architectures mean more fiber
• Early HFC networks provide limited
means for managing fiber nodes
• Fault isolation with fiber networks
is troublesome, hence expensive
• Outside-plant and access network
field services need specialized
management tools
Improving Operations in Cable Networks
Motivation
Comprehensive network monitoring is a prerequisite to operational excellence

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Access Network Headend
• Data network OAM capabilities neither
identify root causes nor locate fiber
issues
• In consequence, field services need on-
site visits for fiber link testing
• Truck roles consume time and money
• Frequently active components fail rather
than the fiber (“false negatives”)
• Testing can affect service
• Slow repair cycles negatively impact
customer satisfaction
Challenges With Analyzing Fiber Issues
In Case of Fiber Problems
Cable operators are eager to operate their fiber network more efficiently
Fiber
CMTS
Distri-
buted
CCAP
HFC architecture
DAA architecture
????
core
Fiber node
DWDM

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Headend
Real-Time Fiber and Cable Monitoring
• Differentiation between issues with active components and fiber breaks
• Immediate notification of fiber issues and precise fault localization
• Faster repair cycles by targeted engagement of field services rather than
complex and time-consuming root cause analysis with on-site visits
Proactive fiber monitoring for efficient maintenance of fiber plant
Access Network
CCAP/
CMTS
Non-Intrusive Fiber Monitoring by Optical Test Signal

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A Simple and Efficient Solution
CCAP/
CMTS
Non-Intrusive Fiber Monitoring by Optical Test Signal
• Reflecting optical test signal
• Pluggable demarcation reflector or
integrated with patch cord
• ALM link monitoring unit for 16 fibers
• DWDM coupler for feeding optical test
signal into fiber
Demarcation Reflector ALM and DWDM coupler
HeadendAccess Network

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Trouble ticket
raised when
ALM alarms
NOC tests verify
ALM notification
Outside plant
team moves to
identified fault
location
Fault resolution
STARTS
Trouble ticket
raised when
customer calls
NOC tests active
equipment – if it
fails call the
outside plant team
Outside plant
team dispatch
OTDR to D-Hub
OTDR shoots the
line to determine
fault location
Fault resolution
STARTS
Outside plant
team moves to
identified fault
location
Streamlining Operational Processes
Faster repair cycles and less truck rolls with ALM
4–6 hours MTTR saved
Without ALM
With ALM

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ALM - Key Features and Benefits
• Service agnostic OTDR technology for 24x7
in-service fiber link monitoring
• Cost-optimized solution for real-time service
assurance
• Automated fiber fault detection, localization
and notification
• Ease of use featuring intuitive GUI, integrated with various GISs, open SNMP-
based NBI, integrated into the ADVA Network Management System
• Proven technology, deployed with major fixed and mobile network operators
Unique in-service fiber monitoring: cost-efficient, fast and reliable

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• Proactive fiber monitoring for precise
and real-time fault isolation
• Detailed information at hand rather
than reacting to customer complaint
• Significant cost saving by improved
outside-plant maintenance processes
• Moving from residential-grade to
carrier-grade services
Streamlined Operation of HFC and DAA Networks
Solve problems before they hurt
Fiber link monitoring is key to efficient operations and competitive services

9. IMPORTANT NOTICE
The content of this presentation is strictly confidential. ADVA Optical Networking is the exclusive owner or licensee of the content, material, and information in this
presentation. Any reproduction, publication or reprint, in whole or in part, is strictly prohibited.
The information in this presentation may not be accurate, complete or up to date, and is provided without warranties or representations of any kind, either express or
implied. ADVA Optical Networking shall not be responsible for and disclaims any liability for any loss or damages, including without limitation, direct, indirect, incidental,
consequential and special damages, alleged to have been caused by or in connection with using and/or relying on the information contained in this presentation.
Copyright © for the entire content of this presentation: ADVA Optical Networking.
Thank You

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ADVA ALM