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To: supergekko who wrote (1336)7/15/1998 8:48:00 PM
From: savolainen  Respond to of 1998
 
[adsl/VoiP]

Hi super g.

sounds like eci may be stonger on the adsl front with dt than i'd realized.... and they seem like a very capable company... and there is also the vocaltec/dt connection coupled with the eclif/vocaltec connection which may make this one worth watching.. (and hopefully orctf can fit in there somewhere)

---
the first press earlier this year regarding adsl for dt was released in conjuction with news regarding IP Telephony (vocaltec)... no connection between the two (adsl and VoIP) was outlined, but have been thinking that bandwidth can only help the VoIP cause.. have not been specifically thinking about the local loop, but would think this might be the key to the inter-relationship

the following article from forbes has been knocking around si and makes the explicit adsl/VoIP connection (albeit somewhat crudely as the author doesn't make it clear that the issues he is concerned with, seem mostly only relevant on VoIP in the local loop):
forbes.com
copied from the VoIP Thread (Thanks Frank C.)
exchange2000.com

"Large scale Internet telephony
By Jeffrey S. Young

....Eventually, when all of us can count on DSL (Digital Subscriber Line) bandwidth of more than one megabit per second, or perhaps even some future AT&T/TCI's coaxial cable services, direct Internet telephony may become a viable way to make calls. Until then, forget it..."
---
The basic problem of VoIP in the local loop being latency:

"..The problem is latency--on a 56K dial-up connection, over the regular Internet, there's a minimum of several seconds' delay between speaker and listener. Today's Internet calls sound worse than the worst bad satellite connection of a few years back. Not only is there an echo, but at least half the words are clipped so heavily in the transmission that they can't be understood. This makes a call sound like somebody is jiggling the connections constantly--the other party's voice cuts in and out without rhyme or reason, intermittently...
---
Would expect that as initial deployments of VoIP roll out, they will be based on gateways thereby bypassing these local loop issues. (regular local phone service to a gateway on the backbone where conversion to IP will take place), but as we move forward would think the bandwidth of xdsl may be enuf to provide the requisite quality of service necessary to bring VoIP thru the local loop... (?)

do you have any sense of whether dt may be planning to take advantage of adsl's bandwidth for their VoIP plans?

best wishes
s