1442
14
Key Telephone
you can dial the CO line number (external number) after hearing the CO
line dialing tone, then you can press and hang up ,then the
extension can keep talking with CO line)
+ +
+ CO number + + +
Three way conference
One CO line and two extensions During conversation with CO line press
+The third part extension number +talking +
+ + the third part extension number + +
Two CO line and one extension
：
During conversation with CO line press
CONF key ,then press CO.DSS key which is spare and dial another
external number and communicate then dial CONF key.
+ +
+ +
If key phone press CONF key again, the Co line can make a call to other
Co line. Now the Key phone can hang up, and the Co line can remain the
call. In this state, the system will call the key phone per 25 seconds. If you
pick up the handset, the conference will call rebuild.
Re m a r k
：
：：
：
If o n e ex t e n s i o n ha n g u p , th e ot h e r
ex t e n s i o n ca n re m a i n t h e c a l l
Remark: If key phone hang up, the conference will be shut down
immediately.
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