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SpectraLink Corporation NetLink e340/h340/i640 Wireless Telephones and Accessories User Guide
Part Number: 72-1004-01-J.doc
Page 24
Push-to-talk (PTT)
(NetLink s640 Docking Station only)
The push-to-talk feature allows NetLink i640 Wireless Telephones
to operate in a push-to-talk (PTT) group broadcast mode in
addition to the standard telephone operation.
Overview
This push-to-talk functionality is transferred to the NetLink s640
Docking Station when the NetLink i640 Wireless Telephone is
placed in the docking cradle. The instructions below that refer to
the Docking Station assume that there is an activated NetLink i640
Wireless Telephone in the docking cradle of the NetLink s640
Docking Station.
The NetLink i640 Wireless Telephone supports eight channels with
the current channel saved in memory on the NetLink i640 Wireless
Telephone. A PTT call is initiated by pressing the
CONF button
located at the bottom of the Docking Station keypad. All NetLink
i640 Wireless Telephones and Docking Stations that are monitoring
that channel will hear the transmission.
PTT dialogue is interrupted when you answer a PBX call. When the
PBX call is ended, PTT dialogue resumes if in an active call.
The PTT mode controls the keypad during a push-to-talk call
period. Therefore it is not possible to use the keypad for any other
function such as accessing the on-hook menus or accessing an OAI
application unless the PTT call is Terminated (see below). However,
it is possible to easily place a PBX call (see below).
Selecting a channel
The channel for the Docking Station is selected in the NetLink i640
Wireless Telephone per user guide instructions for that device. The
channel for the handset is set in the User Preference menu
described in the handset user guide.
Call period
The two-way radio operates on the concept of a push-to-talk
session or call period. The push-to-talk call period begins with the
first transmission and ends when there has been no two-way radio
traffic on the channel for ten seconds.
Initiating a call
Press and hold the
CONF button to activate the channel before
talking. The display will show
Transmitting and you may begin
talking.
Transmitting
Once a call has been initiated, continue to hold the
CONF button
and talk into the speakerphone (i.e. talk at the handset like you
would for a regular speakerphone call). When the
CONF button is
released, the NetLink Docking Station then enters the waiting state
where it monitors the channel for up to ten seconds.
Initiate subsequent transmissions by pressing the
CONF button on
any Docking Station or the PTT radio control button on any
NetLink i640 Wireless Telephone using the same channel. The user
can start talking immediately. The display screen shows the current
active channel.
If no transmission occurs during the ten-second countdown period,
the Docking Station reverts to the idle state.
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