NIO CommKit Host Interface Installation and System Administration Manual

6-3

Porting CommKit Applications To Release 4.x

Environment Variables Compatibility

All previous CommKit software releases have supported the environment

variables DKINTF and DKKEY. DKINTF has a new deﬁnition for this

release. Table 6-5 summarizes the status of these variables for the current

release.

NOTE: The function of the old environment variable DKNUMINTF is now included in

DKINTF. To support the old function of DKINTF and DKNUMINTF with two

interfaces, DKINTF can have the values 0,1 or 1,0. For more information, refer to the

following section describing DKINTF.

DKINTF

Release 4.x supports a new syntax for DKINTF (a comma-separated list of

interfaces), as shown below:

DKINTF=0,0,1

The dial-out attempts are made in the order deﬁned in the list, until a call is

completed or the end of the list is reached. This allows lists in which one

interface is preferred over others. For example, the list shown in the previous

DKINTF deﬁnition will dial over interface 0 twice before dialing over

interface 1.

Table 6-1 Status of Environment Variables

Variable Status

DKKEY Unchanged

DKINTF Deﬁnition changed