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Technology Stocks : Crys*Tel Telecommunications.com, Inc. (CYSS) -- Ignore unavailable to you. Want to Upgrade?

To: ajs who wrote (170)	4/21/1999 11:59:00 PM
From: Jorj X Mckie	Read Replies (2) \| Respond to of 338

ajs, The first red flag is that they use IP Telephony and Internet Telephony interchangeably. There is a vast difference between the viability of the two in a billed voice environment. To put it bluntly, the quality of a voice call going over the Internet, sucks. It has nothing to do with the end devices and everything to do with the fact that the Internet is a jitterfest. That means that there is a lot of delay and a lot of delay variation which realtime communications, such as voice, cannot tolerate. There are numerous examples where they refer to Internet telephony in this way. It demonstrates a naivete about the technology and the infrastructure that causes me to raise my eyebrow. They mention phone-to-PC and PC-to-PC (voice) communication over dial-up internet connections, yet the Nokia Vienna does not offer voice compression (only silence suppression) where the claim that they get bandwidth savings of 50%. This would be best case and unlikely in a sustained mode. Further 50% of 64K is 32K. Think about your dialup internet connection and ask yourself if you are getting sustained 32k worth of bandwidth. viennasys.com Most VoIP implementations are using the latest standards based compression algorithms such as G.723.1 (5.3k - 6.3k) and G.729 (8k). There is no compression listed in Vienna Systems data sheet, which is ok, just impractical as hell for a dialup connection. The underlying message is that the Internet does not have the Quality of Service (QoS) mechanisms to provide a voice transport friendly environment. The idea of using the Internet for business telephony applications or any applications where you actually want to communicate with the other end effectively and also bill for it, is a pipedream. I am one of the biggest advocates you will find for IP Telephony, and what they posted on their webpage does not instill confidence in me that they understand what they claim to be offering. JXM