SHDSL), which are being deployed now for MTU/MDU
in-building Ethernet connections; annual double-digit port growth is predicted from
2005??“2009.
116 Chapter 3
Ethernet over DSL is a fast growing technology, with VDSL now well suited for MTU/
MDUs and G.SHDSL for longer connections. The MTU/MDU market is very strong
in Asia Pacific and Europe, and looking good in North America. Carriers using VDSL
extensively are Belgacom, Chungwha, KDDI, KT, NTT, and SoftbankBB.
A number of U.S. IOCs are deploying VDSL now, and ILECs are looking at VDSL technologies
as the local loop vehicle for triple play (data, voice, and video) services to customers
who might otherwise buy these services from a cable operator. AT&T??™s strategy is to
use VDSL as soon as it is available for their FTTN plan to make IPTV services available
to 18 million customers by end of 2007. ILEC/PTT selection of VDSL will be a boon to the
technology, when the new VDSL2 products are delivered by manufacturers in 2007.
Ethernet over cable technology has been deployed by a few cable operators on a
very limited basis. Most cable operators appear to be awaiting DOCSIS 3.0 solutions
or plan to use fiber Ethernet or PON to address the approximately 6??“8 million businesses
passed by coaxial cable networks.
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