Operation Manual
Appendix
Page 34 © 1998 by TELES AG Berlin, Version 1.30/iTA-eu/f/8.02, Issue: June 1998
6.6 Glossary
Term Explanation
B channel
Bearer Channel. An ISDN channel for data transmission allowing
up to 64kbps. The Basic Rate Interface (BRI) consists of two such
channels.
Call forwarding
A call that is directed to phone A is routed unconditionally to phone
B. Every time a call is made to A, phone B rings instead.
Call holding
The ability to talk to a third party while still being connected to the
first. The first party is said to be ‘on hold’.
Call transfer
You receive an incoming call and transfer it to another party.
CAPI
Common ISDN Application Programming Interface. The software
interface between your ISDN device and PC. There are at present
two versions available: CAPI 1.1 and CAPI 2.0. TELES offers two
versions: Dual-CAPI 1.1 + 2.0 and CAPI (32bit for MS-Windows).
CB code
CallBack code. Five-digit code that must be entered in order to acti-
vate the Personal CallBack Server function.
CLI
Call Line Identification - a BRI board attached to the same ISDN
line as the TELES.iTA/2TR Box can identify all calls made to the
TELES.iTA/2TR Box.
D channel
ISDN channel used for call signaling. It allows data rates of up to
16kbps.
D channel protocol
Protocol for ISDN signaling. In Europe, the DSS1 protocol is stan-
dard.
DSS1
The European standard protocol (Euro-ISDN or ETSI). You can
only use terminal devices on the ISDN line that were designed for
this protocol
DTMF
Dual Tone Multi Frequency. Also known as touch-tone dialing.
Only phones capable of touch-tone dialing can be used to configure
TELES.iTA/2TR Box settings and functions.
ISDN
Integrated Service Digital Network. The digital telephone network
Jack
A female socket for plugs such as the RJ-11 or the RJ-45
LED
Light Emittance Diode. The 4 small “lights” on the front of the
TELES.iTA/2TR Box case. LED
MSN
Multiple Subscriber Number. In the DSS1 protocol of Euro-ISDN,
a subscriber is provided several numbers (MSNs) which he can
freely assign to his terminal devices.
PBX
Private Branch Exchange. An internal, not public, telephone
switching system.