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Configuration:
Basic Advanced TCP/IP Wireless
VT2400/VT2500 Series Voice Gateway User Guide
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IKE
Internet Key Exchange
ISAKMP
Internet Security Association and Key Management Protocol
ISDN
Integrated Services Digital Network
ISO
The International Organization for Standardization (http://www.iso.ch) is a worldwide federation of
national standards bodies from approximately 140 countries. ISO is a non-governmental organization
established in 1947 to promote the development of standardization and related activities in the world
with a view to facilitating the international exchange of goods and services, and to developing
cooperation in the spheres of intellectual, scientific, technological, and economic activity.
ISP
Internet Service Provider
ITSP
Internet Telephony Service Provider. A company that provides VoIP telephone service. It may be the
same as or different from the end-user broadband Internet provider. Also referred to as a “VoIP
provider” or “voice provider.”
ITU
International Telecommunications Union
kHz
kilohertz — one thousand cycles per second
