
Installation in Unattended Mode 93
Role
Role specifies if the Diva Server adapter is operated as terminal endpoint or as network
termination, e.g. as switch emulator. If you set this parameter to ‘0’, the adapter is operated
as terminal endpoint. If you set it to ‘1’, the adapter is used as network termination.
The default value is ‘0’.
Parameters for all switch types except RBS T1
IIfType
IIfType (ISDN Interface Type) specifies the type of ISDN interface to which the adapter is
connected. This parameter is mainly used for the graphical user interface (GUI) and must
be changed together with the parameters ‘TEI’, ‘NT2’, ‘Permanent’ and ‘StableL2’.
Possible settings are:
• 0 (Standard): The adapter is connected to a standard ISDN bus. Default values for
specific parameters: TEI=0, Permanent=0, StableL2=0, NT2=0. This option is only
available with BRI adapters.
• 1 (Point to Point): Choose this setting if the adapter is connected to a point to point
(NT2) interface (also referred to as ‘direct dialing interface’ (DDI)). It provides you with
an ISDN line with a basic phone number that is able to accept any extension digits and
pass them to the ISDN applications. Note that the parameter ‘NT2’ should be set to ‘1’
if point to point is selected. In special cases it might need to be set to 0. Default values
for specific parameters: TEI=1, Permanent=0, StableL2=2, NT2=1.
• 2 (Leased Line): This setting indicates that the adapter is operated on a group 2 leased
line. Default values for specific parameters: TEI=1, Permanent=1, StableL2=2, NT2=0.
The default ISDN Interface Type for BRI adapters is ‘0 (Standard)’ and for PRI adapters
‘1 (Point to Point)’.
StableL2
StableL2 controls the D-channel layer 2 connection mode. Possible values are:
• 0 (On Demand): The D-channel layer 2 control connection is activated to establish the
B-channel data connection and is deactivated as soon as the B-channel data
connection is released.
• 1 (No DISC): The D-channel layer 2 control connection is activated when the B-channel
data connection is established for the first time and is kept active afterwards.
• 2 (Permanent): The D-channel control connection is activated as soon as the ISDN
protocol is loaded and is kept active.
The default is ‘No DISC’ for Diva Server BRI adapters and ‘Permanent’ for Diva Server
PRI adapters.
Note: The American ISDN protocols National ISDN 1 and all AT&T protocols as well as
point to point interfaces always require ‘Permanent’.
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