Aastra NeXspan C, Руководство по установке

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AMT/PTD/PBX/0020/2/4/EN 01/2007 Page 19
The PARK (Portable Access Right Key) is the number associated with a PARI or SARI registered
in the cordless handset during initial identification on the DECT network. To avoid locking onto a
base station on which it is not authorised, the mobile possesses the PARK{y} information item,
containing the first y significant bits of the ARI (PARI or SARI) used to encode the right of access.
This information is loaded into the mobile when it registers.
FOR A SINGLE-SITE PBX MANAGING LESS THAN 32 CELLS:
A single PARI assigned to all the base stations is provided by AASTRA. Authorization access is
performed by testing the PARK registered in the mobiles which must correspond to the PARI.
FOR A MULTI-SITE PBX WITH GLOBAL ACCESS (each mobile has access to the entire
multi-site network):
Each PBX has the same PARI(s). Multi-site base station access is by a common SARI. Access
authorization is performed by testing the PARK registered in the mobiles. The PARK must
correspond to the SARI.
FOR OTHER MULTI-SITE CONFIGURATIONS:
Please contact AASTRA (ask for the "pre-sales" engineer).
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 mobile before the mobile registration request is made.