Trend in Submarine Maintenance as IP and DWDM Converge Ken Herrmann Ken Herrmann VSNL International VSNL International
Presenter Profile Ken has 21 years of experience in the Telecommunications industry. His undersea cable experience includes laser development, cable system commissioning, Maintenance Authority representative, operations and finally strategic planning. He has also been involved in managing and engineering terrestrial links that bring customer traffic to the large capacity submarine systems. Ken has a BS in Electrical Engineering from the University of Dayton. He started his career at AT&T Bell Labs in Murray Hill, NJ Ken Herrmann Sr. Manager Strategic Planning Sub-Sea & Terrestrial Routes k.herrmann@vsnlinternational.com (732)-888-6765 Mobile 908-472-9706
Trend in Submarine Maintenance as IP and DWDM Converge
Submarine Cable Maintenance A Commitment a Cable Owner MUST Provide � Repairs are Costly Operations – Running Cost for a Repair • Fuel & Lube Oil, • Labor, • At Sea Insurance, • Port Charges, • Consumables, • ROV Costs, • & Miscellaneous � Contract to Guarantee Ship Availability – Consortium Maintenance – Private Maintenance – Open Market
Consortium & Private Maintenance Contracts
Open Market Maintenance
Traffic Restoration • Restoration is an Essential Customer Requirement • Cable failures can take, on average 2 weeks • There has been a progression that moves the restoration from the cable head to the customer
Cable Restoration Schemes the Early Years
Cable Restoration Schemes SDH/SONET Ring
IP POP Cable Restoration Schemes IP Scenario
WDM Over Submarine Cables •Cable Systems at 10G, currently •40G is in the near future
Global Lit Capacity for Subsea Cables Fully Upgraded Estimated Lit Current Estimated Lit 7,000 Gb/s 41,000 Gb/s •If each new 10G wave cost $200k, it would cost $68 million to upgrade the Worlds cable systems
Estimated cost for Submarine Cable Maintenance Worldwide $200,000,000
Move Toward IP on Submarine Cables •Trend toward purchasing of unprotected circuits •IP interface cards being produced by terminal suppliers •Switching being moved from the cable station to the city center POPs •Large number of possible paths out of the city centers
Convergence of WDM and IP •WDM will provide the increased capacity at a low cost to the customer •IP will provide the customer restoration •IP POPs will provide the connectivity to multiple submarine paths
Submarine Cable Maintenance Cost Reduction Options •Increase the the SLA requirements of Maintenance contracts •Reduce the number of ships •Group repairs together to cut down on running costs
Switching Trends Effect on Submarine Maintenance • When SDH ring switching was applied to Submarine Cable Systems – Many Maintenance contracts were able to reduce the number of ships dedicated to the a contract – Time to repair was able to increase, though some risk of multiple failures was still present • When IP switching is applied to Submarine Cable Systems – Ship reductions – Time to repair increased, risk of multiple failures is reduced since the IP network is tied to multiple paths
Cable Restoration Schemes IP Over Multiple Path IP POP
There could be a trend toward a Spot Market if the a Repair doesn’t need to be happen ASAP
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