Siemens Gigaset S685 IP Manual page 251

C
Call forwarding (call divert)
Automatic forwarding (CF) of a call to a different telephone number. There are
three kinds of call forwarding:
– CFU, Call Forwarding Unconditional
– CFB, Call Forwarding Busy
– CFNR, Call Forwarding No Reply
Call swapping
Call swapping allows you to switch between two callers or between a confer-
ence call and an individual caller without allowing the waiting caller to listen to
the call.
Call waiting
= CW
VoIP provider feature. A beep during a call indicates that another caller is wait-
ing. You can accept or reject the second call. You can activate/deactivate the
feature.
CF
Call Forwarding
See Call forwarding (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.
Application that requests a service from a server.
Client
Codec
Coder/decoder
Codec is a procedure that digitises 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 recip-
ient when establishing 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 bandwidth 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.
= CF
CF.
Glossary
249