Ericsson AVP 1000 Reference Manual page 86

Getting Started
The unit supports the use of 31 keys for BISS, which are stored in a memory table
on the unit, with the location identified as BISS Key 1 to BISS Key 31.
Each required key must be entered into the table by the user, and once entered, the
key value is not visible and there is no means of reading the value.
The key may be entered or edited via the browser when applying BISS to an output
service from the Service Configuration tab.
Figure 3.21 BISS Key Entry
Alternatively the table entries can be edited by browsing to Device Configuration >
Advanced Setup > Base Unit > BISS keys table and selecting the required key
location.
Figure 3.22 BISS Key Session Word
EN/LZT 790 0023/1 R16A
3-44