Voice over IP services: the sound decision

被引：0
|
作者：
Gareiss, R. [1 ]
机构：
[1] Data Communications
来源：
Data Communications | 1998年 / 27卷 / 03期
关键词：
Computer networks - Data communication systems - Network protocols - Telecommunication networks - Telephone lines;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
IP telephony means big savings on international calls - but quality and coverage are the big trade-offs. There are several ways to send voice across the IP net. One is to run voice over a data VPN via IP telephony gateways or ISP switches to the branch office or off-net. Another is to sign on with an ITSP. Companies send calls through the corporate gateway and on to the ITSP gateway, or they send all calls directly to the ITSP gateway via toll-free dial-up.
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页码：74 / 77
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