Siemens 3035isdn - Manual (Page 84)

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ISDN glossary
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Call forwarding (via the second B-channel)/internal forwarding
While external call forwarding is performed by the network provider’s local
exchange, internal forwarding is implemented by your telephone. Your tele-
phone forwards the call via the second telephone line of the ISDN connec-
tion. This means that both “lines” are seized for the duration of the call. The
connection costs to the forwarded call number are borne by you. This func-
tion does not incur network provider charges.
Caller list
Depending on the setting, this list contains the names of the callers you
have not reached, or those you have spoken to. The last 20 calls are stored
with number, date and time. If you wish, subscribers can be called back di-
rectly from this list.
Call waiting
Feature supplied by provider. A signal is heard during a call if another party
is calling. ISDN telephones also signal this with a display message. You can
then decide whether to accept or reject the second call.
Call waiting rejection
Deactivates the call waiting signal.
Callback on busy
First the caller must activate the callback function on his terminal. This is a
feature in ISDN. A connection is automatically set up as soon as busy status
is ended on the destination connection. The caller receives a signal after the
connection becomes free. The connection is automatically set up as soon
as the latter lifts his handset.
Caller identification
The caller‘s call number, name or type of connection (e.g. trunk/internal) ap-
pears on the telephone display.
Calling Line Identification Restriction
Deactivate transmission of your own call number.
CCBS (Completion of Calls to Busy Subscriber)
See Callback on busy.
CD (Call Deflection)
See Call deflection during the callin phase.
CF
See Call forwarding.
Channel
Although the ISDN connection, like analog telephone connections, takes the
form of two wires, nonetheless a distinction is made in ISDN between the
two logical usage channels, or B-channels (these have nothing to do with the
physical cables!), and the control channel, or D-channel.
Charge display
See “AOC-D“ and “AOC-E“ .
CLIP (Calling Line Identification Presentation)
Subscriber A calls B. B can see A‘s call number on his telephone display.
CLIR (Calling Line Identification Restriction)
Deactivate transfer of own call number.
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ISDN glossary
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COLP (Connected Line Identification Presentation)
Subscriber A calls B. B‘s number is displayed on A‘s phone. If, for example,
B has programmed call forwarding to C, then the number dialled and the
transfer number are not the same; C‘s number is displayed if C enabled call
number display.
COLR (Connected Line Identification Restriction)
C‘s phone number is not displayed on A’s phone if C activated COLR.
Conference call
See Three-party conference.
CW
See Call waiting.
D D-channel
Control channel of an ISDN connection. See Channel.
Digital exchange
Computer-controlled memory time switches are used to enable fast connec-
tion setup and the activation of enhanced features such as => enquiry calls,
=> call waiting, => three-party conference, => call forwarding, etc.
E ECT (Explicit Call Transfer)
See Explicit call transfer.
Electronic code lock
A personal identification number (=> PIN) that can be used to protect a
phone against unauthorised use for example - only the emergency call func-
tion is available. Incoming calls can be received.
En-bloc dialling
Preparing to dial. You can dial the number first and then correct it if neces-
sary. After this you can list the receiver or press the speaker key.
Enhanced connection
ISDN connection with three features more than the standard connection:
call forwarding, transmission of charges after the call and a voice mailbox.
Enquiry calls
You are conducting a call. You can use the “Enquiry Call” function to inter-
rupt the call briefly in order to establish a second external or internal connec-
tion to another subscriber. If you immediately end the connection to this
subscriber again, then this was an enquiry call. If you switch back and forth
between the first and second subscriber, this is called toggling.
Exchange
Node in public telephone network. A distinction is made between local area
exchanges and international exchanges, for example.
Explicit Call Transfer (on some ISDN telephone systems)
Subscriber A calls subscriber B, places the connection on hold and calls sub-
scriber C. Instead of allowing everyone to speak together via a three-part
conference, A transfers subscriber B to C and hangs up.