Appendix
Glossary
2004 by TELES AG Berlin, Version 2.0/iPBX8TRe/6.02, Issue: May 1998
Page 67
Term
Explanation
Direct Line Access with
Subaddressing
Least Cost Routing method in which the dial-in node of the network carri-
ers is called and the destination call number is transmitted via the subad-
dress of the ISDN. This method supported by the TELES.iPBX 8TR Box
requires a TELES.iSWITCH dial-in system at network carrier. As soon as
the called party answers the call, the chargeable connection is established.
Do-not-disturb
The telephone does not ring so that you are not bothered.
Drop port
Serves to pick up calls that cannot be sent to any port for the following
cases:
On the point-to-multipoint line / point-to-point line:
When the called num-
ber belongs to your ISDN line, but hasn’t been assigned to a port.
On the point-to-point line:
When the called number is incomplete, e.g. with-
out extension.
DSS1
The European standard protocol (Euro-ISDN or ETS). You can only use
terminal devices on ISDN line that were designed for this protocol.
DTMF
Dual Tone Multi Frequency
Also known as touch-tone dialing. Signals to
control telephony applications (i.e. VoiceMail). If the connection to a te-
lephony application exists then DTMF tones are made by the phone and
transmitted via the B channel. Not all terminals support DTMF. On some
terminals, DTMF must be activated explicitly. The method is significantly
faster than pulse dialing.
Extension
Port with an appropriate number on the TELES.iPBX 8TR Box. The termi-
nal device, e.g. a telephone is attached here. It is reached by an internal
call number; the extension number.
External call
Chargeable connection between a party of the public telephone network
and a party in the iPBX
Flash key
↑
R key
Follow me
When, for example, you are working at another a telephone other than
your usual one, you can have calls intended for your own telephone redi-
rected to the one you are at.
Hold for enquiry
When you conduct a telephone conversation you can put it on hold in order
talk with another person on another telephone, i.e. make an enquiry. The
held party cannot listen in to that call. Next, you can return to your previous
party.
Hold and alternate
Switch back and forth between two telephone calls by pressing the R key.
The other party is temporarily put on hold. The two parties have no con-
nection with each other – they just hear the on-hold tone or on-hold music.
Hotline function
↑
Direct call.
Internal call
Connection setup from one party of the iPBX to another party of the iPBX.
It is free – causes no charges
ISDN adapter
Hardware (board or box) to connect the PC to ISDN.
ISDN line
Also known as BRI bus, S/T interface, ISDN point-to-multipoint line etc. It is
the network terminal or ISDN port supplied by the network car-
rier/telephone company. Several terminal devices can be attached to the
S/T interface (e.g. ISDN telephones, ISDN adapter for computers, etc.)
ISDN service features
ISDN provides many service features that in some cases you have to order
and pay for separately.
↑
ISDN
ISDN
Integrated Service Digital Network
. The digital telephone network for trans-
mitting voice, text, images and data at high speeds and quality. ISDN of-
fers special conveniences such as caller ID, hold for enquiry/hold and al-
ternate, three-party conference, call forwarding, call waiting, callback on
busy, advice of charges during and at end of the call, etc.
Jack
A female connector, i.e. socket, for plugs such as the RJ-11 or the RJ-45.
Least Cost Routing
Establishing a connection through a network carrier or exchange service
with low tariffs.
↑
Direct Line Access with Subaddressing
↑
Carrier Selec-
tion.
LED
Light Emitting Diode – e.g. little lights on the front of TELES boxes or
boards.
