5.2.4 Portable Station (PS) Features
5.2.4.1 Portable Station (PS) Connection
Description
This PBX supports the connection of a PS. Cell Stations (CSs) allow PSs to receive reception within a
designated area. It is possible to use the PBX features using the PS like a PT.
Conditions
• For details specific to SIP-based CSs and PSs, see "5.2.2.2 SIP Portable Station (S-PS) and SIP Cell
Station (SIP-CS)".
• The PS registration is required through the system programming. To avoid unexpected registration to
another PBX, the Personal Identification Number (PIN) for the PBX is necessary to register a PS. The
registration can be cancelled.
• Handover
Even if a PS user moves during a conversation, the PS will automatically switch between cells without
disconnecting the call (Handover).
Handover is available in any of the following cases:
a. During a conversation with an extension or outside party.
b. While a call is ringing at the PS.
c. While the PS is in idle status.
d. In a stacking connection, the CSs are connected to different PBXs. (® 5.3.1 Stacking Connection)
However, Handover is not available in any of the following cases:
a. When the new (Handover) CS is busy.
b. When there is no CS within range.
c. While the Live Call Screening (LCS) or Two-way Record is activated (® 3.2.2.19 Live Call Screening
(LCS) and 3.2.2.34 Two-way Record/Two-way Transfer).
d. While the PS user is paging other extensions (® 2.17.1 Paging).
e. During a doorphone call (® 2.18.1 Doorphone Call).
f. While the PS user is dialling digits to make a trunk call.
g. During a conversation with an extension using PC Console or PC Phone, to which the conversation is
being recorded.
h. If one CS is a SIP-CS and the other is not (e.g., an IP-CS).
• DSP Resource Usage
Making a call from a PS requires a certain number of DSP resources, depending on the codec used. If all
DSP resources are in use, this operation cannot be performed. To ensure a minimum level of performance,
DSP resources can be reserved for VoIP communication. (® 5.5.4 DSP Resource Usage)
454 Feature Guide
5.2.4 Portable Station (PS) Features
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