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Push-to-talk - General
What is Push-to-talk (PTT)?
• Push-to-talk (PTT) is a special feature on a mobile
phone that combines the functionality of a walkie-
talkie or 2-way radio with the normal handset
features. It provides simple communication to a
group of people with just a push of a button.
• It allows the customer to instantly reach other PTT
contacts by eliminating the dialing and ringing steps
in a regular cellular call. PTT calls can be made to
one person or to a group of people.
• It is also referred to as Push-to-Talk (PTT) .
How does PTT work?
• PTT is based on half-duplex communication (ability
to speak over the same channel but not at the same
time). It uses Voice over internet protocol (VoIP).
• The person who talks, keeps the PTT button
pressed, while others can only listen. Thereafter
the speaker releases the
PTT
button, and the next
speaker presses the button and starts talking.
• A PTT call will end automatically after approximately
40 secs if no one presses the PTT button. Otherwise
in a two way call, the call will end when one person
hits the end key.
Is PTT number different from my mobile number?
No, the PTT phone number is the same as your 10 digit
mobile number. But this number should be provisioned
by the operator for PTT to work.
Can I turn off the speaker phone for PTT calls?
Yes, You can select one of the following options to turn
off the speaker phone for PTT calls.
1. while on the PTT screen, go to
Menu > Settings >
Audio setting > Speaker > Off . After disabling the
speaker,the PTT audio will come over the earpiece.
You can turn on/off the speaker using # key.
2. You can also enable vibrate for incoming call
option, after enabling this option, phone will vibrate
for an incoming PTT call.
What will be the status of the PTT application if I
activate Flight mode?
You will logout of PTT and the presence status will
change to
Offline state
. If you try to access PTT, you
will get a “ Could not connect, Please try again later”
message.
How many entries are displayed in the Call history
screen?
A maximum of 10 entries and 5 Sub entries are displayed
in the call history screen.
Is PTT secure?
Yes, PTT is secure because only a known device can
access the network and all data is completely encrypted
over a secure HSPA channel.
Can I access my other phone features like regular
voice calls, browser, messaging etc. While in active
PTT Session?
Yes. You can make regular voice calls, access browser,
messaging Only when you are on active Radio group call,
by pushing the Radio group call to background using