Spectralink BPX100 用户手册

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SpectraLink Corporation 
NetLink e340/h340/i640 Wireless Telephones and Accessories User Guide 
Part Number: 72-1004-01-H.doc 
Page 16 
Extension 
  Displays the extension currently assigned to the handset. This 
number is for display purposes only; entering it does not assign the 
extension in the host telephone system. 
Push-to-talk (PTT) 
  The NetLink i640 Wireless Telephone incorporates push-to-talk 
functionality. PTT may be allowed or disallowed in the Admin 
menu. If allowed, the user may enable or disable locally, and may set 
the channel, tone volume and audio volume. The menu for push-to-
talk does not appear if PTT is disallowed on the Admin menu or if 
no channel is enabled on the Admin menu. 
Channel  The current channel is displayed. The user may enable any PTT 
channel that has been allowed in the Admin menu by entering the 
corresponding number from the keypad. If PTT has been enabled 
in this handset, the default channel is the lowest allowed channel as 
set in the Admin menu. 
Enable/Disable 
Enable
 turns on PTT mode. 
Disable
 turns off PTT mode. PTT is 
disabled by default. 
 
If PTT is allowed in the Admin menu and enabled by the user, 
standby Battery Pack life is decreased to about 30 hours. 
Audio volume 
Tone volume 
Used to adjust volume of PTT audio and tones. The graduated 
volume bar indicates the levels. The Audio Volume setting may be 
overridden by adjusting volume while the handset is in a push-to-
talk call. Select a volume level by pressing the 
Up
 and 
Down
 side 
buttons and then pressing the 
OK
 softkey. 
(Additional options may be present. Contact your system administrator for information.) 
Push-to-talk operation 
Overview  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. 
 
The NetLink i640 Wireless Telephone supports eight multicast 
channels with the current channel saved in memory on the handset.  
A PTT call is initiated by pressing the 
Talk
 
button located on the 
right side of the handset.  All NetLink i640 Wireless Telephones 
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. 
Selecting a channel  See Setting User Preferences above. 
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. 
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 Terminiated (see below). 
However, it is possible to easily place a PBX call (see below).