ded without it having been taken.
See Call forwarding.
Call forwarding is a performance feature. When call forwarding (CF)
is used, incoming calls can be routed to another, internal or external,
phone number. The call can be forwarded in the telephone system
or the switchboard, or by the SIP provider.
See pickup
Call Through refers to dialling into the system via an external con-
nection and the system putting the call through to a different extern-
al connection. This can reduce call costs.
The call variant specifies which terminals a call is signalled to. The
calendar can be used to control the individual call variants on a time
basis.
Call waiting is a performance feature. Another caller is signalled dur-
ing a phone call.
When call waiting protection is enabled, other callers are not sig-
nalled on the terminal. The caller hears the engaged tone.
See Automatic callback on busy (CCBS)
See Automatic callback on no reply (CCBS)
The number of the party being phoned.
On system telephones, missed calls are saved in a caller list. To
achieve this, calling line identification presentation (CLIP) needs to
be enabled.
The number of the calling terminal.
The Common ISDN Application Programming Interface (CAPI) is a
programming interface for ISDN. It enables application programs to
access ISDN hardware from a PC. See also TAPI.
Control And Provisioning of Wireless Access Points Protocol
(CAPWAP) is used to have wireless access points (slaves) mon-
itored by a WLAN controller (master). It uses UDP port 5246 for
monitoring and 5247 to send data.
CAST is an encryption method (see Cipher). CAST uses a fixed
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Glossary
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