local loop challenges scott jones williams vyvx services oct 2, 2000 video services forum
TRANSCRIPT
Local Loop Challenges
Scott Jones
Williams Vyvx ServicesOct 2, 2000
VIDEO SERVICES FORUM
2 VIDEO SERVICE FORUM
Agenda
Issues
Use of AC power services at POPs
Use of Mid-point video demarc
Use of multiple carriers per local loop (Inter- LATA service)
Local Loops not meeting defined specs within tariffs
Recommendations
3 VIDEO SERVICE FORUM
Issues
AC Power use in POPs
POP AC Power is single sourced non-redundant.
AC Power within the POP is limited, mostly all converted to DC power.
DC power within the POPs is redundant with Battery backup.
DC power provides a cleaner signal to the video equipment, less chance of power spikes, reduced EMI, no hits during power loss.
During a power loss the DC power will be unaffected while the diesel generators come on-line because the equipment is feed primarily by batteries.
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Issues
Mid-Point Video Demarc Local Loop Provider (LLP) will use a point-
to-point system to deliver the signal between the customer premise and a Telco Central Office. Then LLP will use a multipoint system between that CO and the Vyvx POP
Creates video/audio baseband transition point problems.
Reduced video/audio quality additional point of failure additional adjustment point
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Issues
Use of multiple carriers per local loop (Inter- LATA service)
Service type created when the two local loop end points are in LATAs serviced by two different local loop providers.
Typically one group is awarded the contract and the other group becomes the sub-contractor.
Trouble-shooting procedures are complex as the customer is not allowed direct access to the sub-contracted LLP and by the fact that the troubleshooting procedures may differ.
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Issues
Local Loops not meeting defined specs within tariffs
Equipment may not be delivered from the factory stating that it meets local loop specifications.
Equipment is installed without documented proof that it meets local loop specifications outlined in the tariff.
LLPs are not using test equipment and procedures to prove the loops meet tariff before been handed over to the customer.
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Recommendations
AC Power use in POPs Vyvx recommends that at a minimum all
Video equipment serving in an “on-air” capacity in the Vyvx POPs or any other location designed with redundant DC power support be DC powered.
VSF Discussion and Recommendation
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Recommendations
Mid-Point Video Demarc Vyvx recommends an architecture be
created such that the CO collection point does not go through a baseband video/audio transition and also that equipment be DC powered due to the DC restoration capabilities at the COs
VSF Discussion and Recommendation
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Recommendations
Use of multiple carriers per local loop (Inter- LATA service)
Vyvx recommends, where possible, a common procedure be created for troubleshooting video transport services and/or Vyvx (the customer) be given direct access to all the LLPs associated with a feed during an outage.
VSF Discussion and Recommendation
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Recommendations
Local Loops not meeting defined specs within tariffs
Vyvx recommends that all equipment from the manufactures are shipped with documentation that proves it met local loop requirements (excluding adjustments or demarcation cabling) and/or all LLP must provide documented proof to Vyvx (the customer) that the local loop met the specification listed within their tariff using agreed upon test equipment and procedures.
VSF Discussion and Recommendation