Product manual

System description, DECT air interface
Technical Product Manual - DCT1800-GAP
TD 92093 (1/LZBNB 103 108 R4D) / 2006-03-09/ Ver.C
© 2006
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A TPUI (Temporary Portable User Identity) is a short and locally unique portable part identity that is
used for paging (e.g. broadcast message addressing one particular portable part). Each TPUI is
associated with an IPUI. There are individual TPUIs and group TPUIs (call-group). The TPUI is a 20-
bit identity.
6.7.2 Access rights to several applications through the same fixed part
DECT also provides the means for sharing fixed parts between different operators or application areas,
e.g. hosting private user groups in a large public system, providing public access through a privately
owned system or hosting public access to several services provided in a system owned by one of the
service providers. The ARIs related to available additional accesses are broadcast as Secondary
Access Rights Identities (SARIs) by a fixed part.
6.7.3 Structure of the access rights
The following terms are used to describe the access rights, see figure 34):
• RPN (Radio fixed Part Number). It is allocated by the installer to each Radio Fixed Part (RFP)
within a fixed part.
• ARI (Access Rights Identity). It is a globally unique identity that shows the access rights of a
portable part to a certain service provider. It consists of an Access Rights Class (ARC) and an
Access Rights Details (ARD).
• RFPI (Radio Fixed Part Identity). This identity number consists of the ARI and RPN. This number
is periodically broadcast or available on request from a portable part.
• PARK (Portable Access Rights Key). This key is derived from the ARI and stored in the cordless
phone during subscription. It specifies the access rights of a cordless phone. A cordless phone
must have at least one PARK - IPUI pair.
• PUT (Portable User Type). There are a number of classes each defining an application area or
supported features. For example, in a business application (private PBX) portable parts are of
type O. The PUT is fixed by the manufacturer in the Central Control Fixed Part (CCFP).
• PUN (Portable User Number). In the PBX application it can be the full PSTN number or the
extension number of that portable part. Depending on the PUT, the PUN can be a 36, 60 or 96
bits number. Portable user type O (private PBX) has a PUN of 60 bits. The PUN is allocated by
the owner or installer and must be a locally unique number.
• IPUI (International Portable User Identity). This identity uniquely defines one user within the
domain defined by its access rights. The IPUI may be locally or globally unique depending on the
type of PUT. It consists of a PUT and a PUN.