Mobile Extension; Figure 1-31 Mobile Extension Layout - NEC SL2100 Features And Specifications Manual

SL2100
Description
A Mobile Extension is an external telephone (preferably a mobile phone) linked to the SL2100 via a
Proxy Port to operate as an internal SLT extension. The extension sends DTMF signals to the system
allowing access to the system features. Each Mobile Extension Proxy Port utilizes a Station Port in the
system, although no physical station port is required. A registered Mobile Extension uses 1 analog
port (ports are reserved in groups of 4), however, no PCB support (analog or digital) is required. The
Mobile Extension port must be an unequipped extension port on the SL2100 system - no physical
keyset is required on the SL2100 system.
M
A Progress Tone is played to the caller until the call to the Mobile Extension number is set up.
A mobile extension cannot be used as a voice mail port.
This feature can currently be used with ISDN PRI trunks or SIP trunks.
It is recommended to use this feature with an ISDN PCB (PRI or BRI), however, analog trunks can be used
as well.
To provide a proper disconnect, Disconnect Supervision is required for the trunks used for this feature.
The Mobile extension internal extension number (Proxy Port) is linked to a speed dial bin to provide
integration.
If all external trunks are busy when a call is made to the mobile extension, ringback tone is presented
giving the impression the phone is ringing.
A DID is directed to the Mobile Extension internal extension number (Proxy Port), and to provide
internal dial tone to the Mobile Extension, the incoming CLI of the Mobile Extension must match the
number in the Speed Dial bin. Once internal dial tone is presented, the operation is similar to an SLT
user lifting the handset.
In the absence of DIDs, the VRS can be used to transfer the Mobile Extension call to the Mobile
Extension number. This provides internal dial tone when the CLI is presented and matches the
number in the associated Speed Dial bin.
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Figure 1-31 Mobile Extension Layout

Mobile Extension

Mobile Extension
ISSUE 1.0