viii 41-001160-00, Rev 01 Release 2.0Contents Call Forwarding ......................................................................................................5-90.Callers List .............................................................................................................5-96.Missed Calls Indicator ..........................................................................................5-101.Directory List ........................................................................................................5-103.Voicemail (55i, 57i, and 57i CT only) ....................................................................5-113.XML Customized Services ...................................................................................5-116.SIP Local Dial Plan ..............................................................................................5-137.Incoming/Outgoing Intercom with Auto-Answer ...................................................5-142.Audio Transmit and Receive Gain Adjustments ...................................................5-146.Ring Tones and Tone Sets ...................................................................................5-148.Priority Alerting .....................................................................................................5-153.Stuttered Dial Tone ...............................................................................................5-160.Call Waiting Tone .................................................................................................5-162.Language .............................................................................................................5-164.Chapter 6Advanced IP Phone Operational Features.About this chapter ...........................................................................................................6-1.Advanced Operational Features .....................................................................................6-2.MAC Address/Line Number in REGISTER Messages .............................................6-3.SIP Message Sequence for Blind Transfer ..............................................................6-5.Update Caller ID During a Call .................................................................................6-6.Boot Sequence Recovery Mode ..............................................................................6-7.Auto-discovery Using mDNS ....................................................................................6-8.Single Call Restriction (57i CT only) ........................................................................6-9.Chapter 7Encryption and the IP Phone.About this chapter ...........................................................................................................7-1.Encryption and the IP Phone ..........................................................................................7-2.Configuration File Encryption Method ......................................................................7-2.Procedure to Encrypt/Decrypt Configuration Files ...................................................7-3.
