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- Path: news1.interserv.net!news
- From: vclant12@interserv.com
- Newsgroups: comp.dcom.modems
- Subject: Re: Using Voice over data modem with ISP
- Date: 12 Jan 1996 20:10:18 GMT
- Organization: InterServ News Service
- Message-ID: <4d6f7a$d6f@lal.interserv.net>
- References: <john.82.00DAC87B@ucsc.com>
- NNTP-Posting-Host: hd51-033.compuserve.com
- X-Newsreader: SPRY News 3.03 (SPRY, Inc.)
-
- > john@ucsc.com (John Falcone) writes:
- > It is unclear to me that it is possible to use voice over data modems like
- > Sportster vi for internet connections. Can I connect to my
- > provider using the voice over data and have someone else connecting to their
- > provider decode my voice over data messages. In other words if a modem in the
- > path can't 'understand' the digitized audio will it just pass it along until
- > it hits a modem that can??? Has anyone done this?
- > Thx john
-
- Assuming your 'voice over data' means 'digital voice over data' :
-
- the original DSVD works between the ORIG and ANS sides. In case of you and your
- IP, this setup would end up at IP site (where nobody is interested in talking
- to end users) WITHOUT going through internet to the remote end user (in Telnet
- session for simplicity).
-
- the future DSVD (data and voice packets together) will pass through the
- intermediate sites (1 modem facing you and 1 modem facing the remote user at
- their respective IP sites) and the voice-carrying DSVD packets will be
- demultiplexed from the stream by the remote user's modem. This way, you'll be
- able to make calls via Internet.
-
- with analog SVD, the voice info rides on top of data point constellation as a
- second vector (like superimposed noise) and gets demodulated by the local IP.
- since from that point on the network is digital, it falls apart unless the IP
- find some way of sending the voice info via 2nd route along with data up to the
- end port facing the remote caller, provided that port is analog. If digital,
- no means are available to send 2 logical channels unless that port and remote
- user are both on DSVD.
-
- vc_lant.
-