Service providers face significant challenges when ramping up their networks to provide advanced triple-play services with the same or better quality than cable/ multiple switch operators (MSOs). A key success factor will be to cost-effectively increase bandwidth to subscribers for new IP video services over bonded asymmetric Digital Subscriber Line 2+/very high-speed Digital Subscriber Line 2 (ADSL2+/ VDSL2) while continuing to provide single line ADSL2+ service to subscribers without triple-play services capability. It is tempting to believe that the bonded two pair ADSL2+/VDSL2 connection can be tested similarly to single line ADSL connection, however, testing one pair at a time is insufficient. Internet Protocol television (IPTV) services require pristine xDSL service Layer 1 performan.
eBay