Inet provides several user facilities which enable the
network to be used in different applications effectively. Some of
these facilities are:
1.
Reverse Charging.
2.
Closed User Group (CUG)
3.
Fast Select.
4.
Charging Information Indication.
5.
Call Redirection.
6.
Call Deflection.
7.
Abbreviated Address Calling.
8.
Hunt Group.
9.
Multiple Packet Sizes.
10.Network User Identification.
Some
of the above facilities and their typical applications are described
below:
Reverse
Charging
It is an optional user facility which may be requested by a
calling DTE (Date Terminal Equipment) for a given call. If reverse
charging is accepted by the called DTE during call setup then the
called DTE pays for the call; normally the calling DTE pays for the
call. Reverse charging acceptance facility is also available. This
will allow a called DTE to accept or reject a reverse charge DTE
to accept or reject charge call, possibly by checking the source
host against a list of host/terminals. The facility is useful for
E-Mail and Database service providers.
Closed
User Group (CUG)
Closed user group is an optional user facility which enables the
DTE to belong to one or more closed user group. It permits the DTEs
belonging to the group to communicate with each other but
precludes communication with all other DTEs. However facilities
like CUG with outgoing or incoming access etc. are also available.
This facility is particularly useful for corporate networking.
Fast
Select
In fast select small messages can be transmitted instantly in the
call set up packet and the response in the clear packet at a fixed
cost. This is useful in applications like Credit Card Verification
System etc. Fast select acceptance facility authorizes the DCE (
Date Communication Equipment) to transmit to the DTE incoming
calls which request the fast select facility.
Basic Services
Types
Facilities
