Siemens Gigaset 4110 Comfort Operating Instructions Manual page 109

ISDN Glossary
D
Digital exchange
Computer-controlled memory time switches are used to set up calls quickly
and activate enhanced features such as => consultation calls, => call
waiting, => three-party conference, => call deflection, etc.
D-channel
Control channel for an ISDN line. See Channel.
E
ECT (Explicit call transfer)
See Switching.
Electronic code lock
Personal identification number (=> PIN) that you can use, for example, to
prevent people using your phone without your consent – calls to the
emergency services can still be made however. Incoming calls can still be
taken.
En-bloc dialling
Also known as advance dialling. You can key in the number you wish to call
and make any necessary corrections. Then you can lift the handset or press
the speaker key.
Enhanced line
ISDN line that offers three features more than the standard line: call
deflection, advice of charge at the end of the call and T-Netbox.
Enquiry call
You are engaged in a call. You can use the "Enquiry call" function to interrupt
the call briefly to set up a second external call or internal call to another
subscriber. If you speak to the other person and then end the call, this was
an enquiry call. If you switch back and forth between the first and second
parties, this is called toggling.
Explicit call transfer (on ISDN telephone systems)
ECT. Subscriber A calls subscriber B, places the call on hold and calls
subscriber C. Instead of now all talking in a three-party conference, A now
transfers B to C and replaces the handset.
Exchange
A nodal point in the public telephone network. A distinction is made
between local exchanges and long-distance exchanges.
H Hands-free talking
The hands-free system on a telephone enables you hear the caller via the
loudspeaker and talk to the caller via a built-in microphone without lifting the
handset. Other people in the room can therefore also take part in the call.
Holding calls
(Hold). Interrupting and restoring an existing call. In particular, this is useful
for consultation calls and toggling.
Hot key
This disables the telephone for all call numbers apart from one specific user-
defined number. When the handset is lifted and any key is pressed a call is
automatically made to the stored number. This is ideal for children who
cannot be relied on to dial correctly. Calls to the emergency services can still
be made. This function is available on Gigaset 3000/2000 Comfort handsets.
108