Gigaset N510 IP PRO Manual page 123

Client
Application that requests a service from a server.
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 com-
pression, 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
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.
COLP/COLR
Connected Line Identification Presentation/Restriction
Feature provided by a VoIP/ISDN 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.
Consultation call
You are on a call. With a consultation call, you interrupt the conversation briefly to
establish a second connection to another participant. If you end the connection to this
participant immediately, then this was a consultation call. If you switch between the
first and second participant, it is called
CW
Call Waiting
See Call waiting.
D
DHCP
Dynamic Host Configuration Protocol
Internet protocol that handles the automatic assignment of
subscriber. The protocol is made available in the network by a server. A DHCP server
can, for example, be a router.
The phone contains a DHCP client. A router that contains a DHCP server can assign the
IP addresses for the phone automatically from a defined address block. The dynamic
assignment means that several
although they can only use it alternately and not simultaneously.
With some routers you can specify that the IP address for the phone is never changed.
Call swapping.
Network subscribers
IP addresses to
can share one IP address,
Glossary
Network
123