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international call number plan, there is the ITU E.164 standard.
F
FTY
FTY or FIE (
F
acility
I
nformation
E
lement) is the most important element in
an ISDN for call signalling, registration and everything regarding the
supplementary services.
5ESS
5ESS (
5
th version of AT&T's
E
lectronic
S
witching
S
ystem). Just as on the
ISDN accesses that use the US national D channel protocol NI1, merely data
transfers at a speed of 56 kBit/s (compared with 64 kBit/s for DSS1 and
1TR6) are possible. The remaining 8 kBit/s are used to transfer the control
data, since the two protocols do not support a separate D channel.
Furthermore, many of these accesses have only one B channel.
FTP
The FTP protocol (
F
ile
T
ransfer
P
rotocol) is used for file transfer between
various systems and for simple file handling. FTP is based on the TCP
transport protocol
(
T
ransmission
C
ontrol
P
rotocol), and supports the
transfer of character-coded information and of binary data. In both cases,
the user must have the possibility to specify the format in which the data is
to be stored on the respective destination system. The file transfer is
controlled from the local system; access authorisation for the destination
system is checked for the connection setup by means of user identification
and password.
G
GAP
GAP (
G
eneric
A
ccess
P
rofile) is the basic DECT profile and applies to all
DECT portable and fixed parts that support the 3.1 kHz telephony service
irrespective of the type of network accessed. It defines a minimum
mandatory set of technical requirements to ensure interoperability between
any DECT GAP fixed part and portable part. This profile has been
established by ETSI as an important part of a set of DECT profiles. Every
DECT device must support one or more profiles to be functional.
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