Conference
Conference 3-Party
  1st call - 2nd call - Flash -*3 - three  way speech is established
Conference - Dial-In
Schedule a Conference:
  *19 - 1 - Conference Number - Assign 4 digit Conference Password
Initiate/Join the Conference:
  *19 - 2 - Conference Number - Conference Password
Cancel  the Conference:
  While in active Conference - Flash - Dial 190
Conference - Multiparty
Multiparty Conference:
  In speech with First Call - Flash - Second Call - Flash - *3 -  3-party Conference is 
  established - Flash - Third Call - *3 - Fourth call....... - Repeat till you have include 
  desired number of parties.
Temporarily Leave Conference:
  Flash - 191
Rejoin  Conference:
  Go Off-Hook - 191
Permanently Leave the Conference:
  While in active Conference  -  Go On-Hook
Cancel  Conference:
  Flash - 190 - Error Tone - Go On-Hook
After the Dial-In Conference has been initiated, it functions as a Multiparty Conference. 
Any participant can be Included, Temporarily Leave, Rejoin the Conference or 
Permanently Leave the Conference. Refer Conference - Multiparty for instructions.
SLT users cannot Remove any party from the Multiparty Conference.
Call Toggle
  In speech with party 1 - Flash - Dial number of party 2 - Speech with party 2 - Flash -  
  Dial 1 - Speech with party 1 - Flash - Dial 1 - Speech with party 2
Call Transfer
Transferring call to an Extension:
  Speech with Extension/Eternal Number - Flash - Extension (Transfer Target) - Go 
  On-Hook
Transferring call to Trunk:
  Speech with Extension / External Number - Flash - TAC - External Number 
  (Transfer Target) - Go On-Hook
Calling Line Identification Restriction (CLIR)
To enable CLIR    :  Dial 1031 - Confirmation Tone - Go On-Hook
To disable CLIR   :  Dial 1030 - Confirmation Tone - Go On-Hook
Cancel all Features of an Extension
  Dia l 1051 -  Confirmation Tone - Go On-Hook
  The following features,  if set,  will be cancelled:
  Auto Answer
  Auto Call Back
  Auto Redial
  Background Music
  Call Forward
  Do Not Disturb
  Hot Line
  Trunk Reservation
  Walk-In Class of Service