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The two methods of operation are basically the same but BISS E Fixed is an
implementation of EBU Tech 3292 which describes how the fixed user ID
(customization serial number) is used to scramble the CSW. Ericsson is a
proprietary implementation but a similar form to this.
The ESW for both formats can be created using a tool provided by Ericsson
Customer Support.
3.11.3.5.4
BISS E User ID 1 / BISS E User ID 2
In this mode the receiver does not use its inbuilt serial number to decrypt the ESW
in to the CSW. Instead it uses either User ID 1 (User One) or User ID 2 (User Two).
These can sometimes be referred to as Injector ID 1 or Injector ID 2.
Figure 3.70 Location of User One and User Two IDs
User ID 1 and User ID2 are 12 digit IDs which are used to replace the built in
customisation serial number when decrypting the CSW.
The use case for this is that the operator will provide a set of User IDs to the
decoder end user. The IDs are used to encrypt the CSW at the encode end and the
decrypt the ESW at the decoder end. The end user of the decoder will need to input
both the ESW and the User ID into either the User One key box or the User Two key
box. The ESW is typed into the BISS key box. The receiver will then decode the
ESW into the CSW and use it to descramble the incoming feed.
3.11.3.6
Configuring BISS Decryption
Figure 3.71 BISS Configuration Within the Web Interface
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EN/LZT 790 0005 R7A
ESW1 descrambled by RX8000 1's serial number = CSW.
ESW2 descrambled by RX8000 2's serial number = CSW.
ESWn descrambled by RX8000 n's serial number = CSW.
BISS Mode – Configures the receiver to one of the following BISS Modes. This
will determines how and what BISS keys are used for descrambling the stream:
o BISS MODE 1: The simplest form for BISS decryption. The supplied
CSW must be entered in to the BISS Key field.
Using the Equipment
3-149
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