Page 1-23
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AMT/PTD/TR/0020/2/7/EN
1.5.4 Constructing the authentication key
The User Authentication Key (UAK) is generated separately for the mobile and the PBX during
registration, using the DSAA (DECT Standard Authentication Algorithm). The following data is
used to generate the key:
•
the authentication code (AC), a concatenation limited to 4 digits of the directory number plus
the installer’s password,
•
the Random-f number, a sequence of up to 10 digits,
•
the RS number, a sequence of up to 10 digits.
The AC is calculated by the PBX when the terminal is declared in the system, and must be
manually introduced into the cordless handset before the cordless handset registration request is
made.
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