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Technology Stocks : LAST MILE TECHNOLOGIES - Let's Discuss Them Here -- Ignore unavailable to you. Want to Upgrade?

To: Kenneth E. De Paul who wrote (3799)	5/19/1999 11:43:00 PM
From: WTC	Read Replies (2) \| Respond to of 12823

Concern for the quality of voice services over cable (cable IP QOS) presumes that the voice service is voice over IP. For AT&T, as well as some other MSOs, the initial foray into voice services will be via channel-switched TDM voice channels -- setting up a 64kb/s or 32kb/s TDM channel over dedicated voice services bandwidth for the duration of the call. That does not get complicated with the IP QOS issues, DOCSIS 1.1, etc. It is not as efficient long term, when voice bandwidth may be more dear than initially, but it is a proven technology available from a variety of vendors with fairly robust operations support, critical for commercial implementation. The IP variants for voice service just do not yet have the maturity in their system architectures to be considered near-term for commercial deployment. I suspect AT&T may be estimating that business-grade VoIP may be 2-3 years off; they want a credible voice play in the interim, so they are not hostage to the technical and systems development yet to happen, development that we can only guess now at ready dates.