You can directly broadcast messages to the speakerphone of any extension. 
The extension you called can respond by pressing the INT key to begin a two-
way communication. Any registered cordless handset can make PTT call with 
each other or the telephone base. Up to five pairs of PTT calls can establish 
at a time. 
PTT to a single handset
1. When the system is idle, press and hold the one-touch  
EXT 1-0 key for the destination party. When the 
connection is made, both the caller and the destination 
party hear two beeps. The telephone base screen 
shows PTT to: X:Handset X Release PTT key to stop 
(X represents the extension number [1-0], Handset X 
represents the default handset name).
2. Speak into the base speakerphone while continuing 
to hold down the one-touch EXT 1-0 key. Your voice is broadcast to the 
desired extension. 
3. Release the one-touch EXT 1-0 key after speaking. There is a three-second 
PTT wait state with -MUTE slowly flashing on the screen and the MUTE 
indicator flashing. During the PTT wait state, if necessary, 
you can press and hold the previous one-touch EXT 1-0 key 
or the INT/PTT ALL key to continue speaking into the base 
speakerphone. 
4. The destination party can now respond (see Answer a PTT call section in 
the SB67108 handset manual). 
PTT to all handsets
1. When the telephone base is idle, press and hold the INT/PTT ALL key to 
automatically activate the speakerphones of all the extensions. Both the 
caller and the destination parties hear two beeps. 
2. Speak into the base speakerphone. Your voice is broadcast to all 
extensions. Release the INT/PTT ALL key after speaking. There is a three-
second PTT wait state with -MUTE slowly flashing on the screen and the 
MUTE indicator flashing. During the PTT wait state, if necessary, you can 
press and hold the INT/PTT ALL key to continue speaking into the  
base speakerphone. 
3. Any extension can reply. The first extension to reply will either convert the 
call into a normal intercom call with the caller or start a new PTT call. See 
Answer a PTT call section in the SB67108 handset manual.
Telephone base operation
Push to talk (PTT) intercom
52
PTT to:
1:Handset 1
Release PTT
key to stop
1
PTT to:
1:Handset 1
-MUTE
1
INT/PTT ALL