The Care and Feeding of ISDN4BSD
12.2 isdnd.rc Setup	12 Setting up the	12.4 Audio Format

12.3 Program Parameters

A script or program executed this way will get three parameters on the command line:

program -d destnumber -s sourcenumber -D device

where:

• [sourcenumber]is the source (remote) telephone number
• [destnumber]is the destination (local) telephone number and
• [device]is the /dev/i4btel<n> device which is used.