Advanced  Phone  Features 
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This chapter provides operating instructions for the advanced features of the SIP-T23P/G 
IP phone. Topics include: 
  Busy Lamp Field (BLF) 
  BLF List 
  Call Recording 
  Hot Desking 
  Intercom 
  Multicast Paging 
  Music on Hold 
  Automatic Call Distribution (ACD) 
  Shared Call Appearance (SCA) 
  Bridged Line Appearance (BLA) 
  Messages 
If you require additional information or assistance with your new phone, contact your 
system administrator. 
You can use BLF to monitor a specific line for status changes on the phone. For example, 
you can configure a BLF key on the phone to monitor the status of a friend’s line (busy or 
idle). The BLF key LED illuminates solid red when the friend's line is in use. For more 
information on BLF key LED indicators, refer to LED Instructions on page 14. 
You can press a BLF key to dial out the monitored phone number when the monitored 
line is idle. You can receive a visual or/and an audio alert (if enabled), and also pick up 
calls that are received on the monitored line. For more information, contact your system 
administrator. 
To configure a BLF key via phone user interface: 
1.  Press Menu->Features->DSS Keys. 
2.  Select the desired DSS key.