Glossary

Glossary

A

Address of Record (AoR)

A ->SIP ->URI that represents the "public address" of a SIP user resp. a phone or line. The format is similar to an E-mail address: "username@hostname". (for a definition, see RFC 3261)

ADPCM

Adaptive Differential Pulse Code Modulation. A compressed encoding method for audio signals which are to be transmitted by a low bandwidth. As opposed to regular ->PCM, a sample is coded as the difference between its predicted value and its real value. As this difference is usually smaller than the real, absolute value itself, a lesser number of bits can be used to encode it.

C

CSTA

Computer Supported Telecommunications Applications. An abstraction layer for telecom- munications applications allowing for the interaction of ->CTI computer applications with te- lephony devices and networks.

CTI

Computer Telephony Integration. This term denotes the interaction of computer applica- tions with telephony devices and networks.

D

DFT

Digital Feature Telephone. A phone with no line keys.

DHCP

Dynamic Host Configuration Protocol. Allows for the automatic configuration of network endpoints, like IP Phones and IP Clients.

DiffServ

Differentiated Services. Specifies a layer 3 mechanism for classifying and managing net- work traffic and providing quality of service (->QoS) guarantees on ->IP networks. DiffServ can be used to provide low-latency, guaranteed service for e. g. voice or video communi- cation.

A31003-O1010-M100-9-76A9, 05/05/2008

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HiPath 8000 - OpenStage Family, Administration Manual

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Siemens 60, 80, 40, 20 manual Glossary, Address of Record AoR, DiffServ