Meridian America 555-8421-211 Manual Do Utilizador

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Meridian Digital Telephone IP Adapter Installation and Administration Guide
217
October 2001 
Glossary 
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a Channel Service Unit/Data Service Unit (CSU/DSU) to access a switched 
56K line service
voice compression
Prior to transmission, the voice data is compressed; after transmission, the data 
is converted back to voice data at the destination. Voice compression means that 
voice consumes less bandwidth, leaving more bandwidth for data or other voice 
or fax communications.
voice jitter attenuation
A feature that removes the variable delays from the voice packets sent across the 
IP network, thus avoiding awkward-sounding speech.
Voice over Internet Protocol (VoIP)
Technology that uses the IP data network to carry the voice conversation and 
telephone set control signals between a remote site and the host PBX. 
W  
WAN
Wide area network. A computer network that spans a relatively large 
geographical area. Typically, a WAN consists of two or more local area networks 
(LANs). The largest WAN in existence is the Internet.