C
Call divert
Call Divert allows a called telephone to redirect the unanswered call to another telephone.
Call Detail Record (CDR)
Information regarding a single call collected from the switch and available as an automatically generated downloadable report for a requested time period. The report contains information on the number of calls, call duration, call origination and destination, and billed amount.
Codec (Compression-decompression)
In VoIP it is a voice compression-decompression algorithm that defines the rate of speech compression, quality of decompressed speech and processing power requirements. The most popular codecs in VoIP are ITU-T G.723.1 and G.729 (AB).
Compression
Compression is used at anywhere from 1:1 to 12:1 ratios in VOIP applications to consume less bandwidth and leave more for data or other voice/fax comms. Voice quality may decrease with increased compression ratios.
Congestion
The situation in which the traffic present on the network exceeds available network bandwidth/capacity.
CSMA/CD (Carrier Sense Multiple Access/Collision Detection)
This is the access procedure to the Ethernet in which the participating stations physically monitor the traffic on the line. If no transmission is taking place at the time the particular station can transmit. If two stations attempt to transmit simultaneously this causes a collision that is detected by all participating stations. After a random time interval the stations that collided attempt to transmit again
Business VoIP
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