Bring 25Mbps IPTV Service with two SD and one HDTV channels
to Unserved & Under-served Customers at Lower Cost than PMO

► Goal
Install / expand 25Mbps HD & SD IPTV service to unserved neighborhoods

► Objective
Minimize RT count required by limited-reach VDSL2 performance

► Challenge
1) shortfall in VDSL2 reach has left existing RT / DSLAMs under-utilized
2) shortfall makes IPTV deployments too costly for HD service using PMO

► Solution CLICK FOR VISUALIZATION >>
1) extend 25Mbps VDSL2 service for HDTV up to 2Kft farther to reduce the number of RTs needed to cover
IPTV service areas by up to 50%, making new IPTV networks cost 30% less
2) stretch ADSL2+ IPTV service for SDTV up to 33% farther, providing up to 78% larger service areas from IPTV DSLAMs
3) revitalize the revenue potential for existing VDSL2 stranded investments


Solving the VDSL2 Shortfall to Revitalize Stranded DSLAM investments

Original VDSL2 specifications and resulting DSLAM design rules were intended to serve 25Mbps out to 4.5Kft. Yet today's VDSL2 modems will not even sync over 3.5Kft.  This performance shortfall has left current VDSL2 DSLAM investments underutilized.  With TLCs upgrading VDSL2 performance to now meet original VDSL2 design benchmarks, subscriber density per VDSL2 node can be restored to levels anticipated in original planning guidelines.


Typical VDSL2 Performance Gains over 26AWG Cable

Insertion of TLCs into the VDSL2 network can extend 20Mbps service from 3.2Kft out to 6Kft - effectively doubling the service area, number of homes passed, and revenue per DSLAM. For 25Mbps IPTV service, reach can be extended 33% farther to serve homes 4Kft from the DSLAM.

 

 

TLC Bandwidth Performance within a Binder Group
The rapid drop-off in VDSL2 bandwidth over distance is commonly attributed to the degradation of the high-frequency portion of the DSL carrier signal due to copper impedance. But an emerging issue is the crosstalk within the copper binder group which also critically limits VDSL2 reach. Phylogy has focused extensively on solving this challenge, testing multi-pair performance in our network interoperability lab. MORE>>

The table at right shows the bandwidth for eight simultaneous VDSL2 lines running in a 25-pair binder group. The top table lists unconditioned VDSL2 averaging only 21Mbps at 3Kft while the bottom list shows TLC performance averaging 23Mbps at 5Kft.