134
Glossary
Gigaset DE410 IP PRO / en / A31008-M2219-L101-5-7619 / glossary.fm / 27.09.2012
PRO Version 3, 30.05.2012
Call waiting
= CW. VoIP provider feature. A beep during a call indicates that another caller is waiting.
You can accept or reject the second call. You can activate/deactivate the feature.
CD
Call divert
See Call divert.
Chatting
Form of communication on the Internet. During a chat, brief messages are exchanged
between the communicating parties in real time. Chatting in this sense is understood to
be a written form of communication.
Client
Application that requests a service from a server.
CLIP
Calling Line Identification Presentation
Telephony feature. The number of the caller is transferred to the called party's phone dis-
play (if the caller activates this feature). The called party's phone must be compatible with
CLIP and the feature must be enabled on the phone port.
Codec
Coder/decoder
Codec is a procedure that digitalises and compresses analogue voice before it is sent via
the Internet, and decodes – i.e., translates into analogue voice – digital data when voice
packets are received. There are different codecs, with differing degrees of compression, for
instance.
Both parties involved in the telephone connection (caller/sender and recipient) must use
the same codec. This is negotiated between the sender and the recipient when establish-
ing a connection.
The choice of codec is a compromise between voice quality, transmission speed and the
necessary bandwidth. A high level of compression, for example, means that the band-
width required for each voice connection is low. However, it also means that the time
needed to compress/decompress the data is greater, which increases execution time for
data in the network and thus impairs voice quality. The time required increases the delay
between the sender speaking and the recipient hearing what has been said.
COLP/COLR
Connected Line Identification Presentation/Restriction
Feature provided by a VoIP connection for outgoing calls.
COLP displays the phone number accepting the call on the calling party's display unit.
The number of the party accepting the call is different to the dialled number, e.g., if the call
is diverted or transferred.
The called party can use COLR (Connected Line Identification Restriction) to prevent the
number from appearing on the calling party's display.
