Audio Processing Features | Polycom 1725-11530-200 Rev A1 guide

Administrator’s Guide - SoundPoint® IP / SoundStation® IP

Features

3.2.9 Last Call Return

The phone allows server-based last call return. This feature depends on support from a SIP server.

		Configuration file:	Turn this feature on or off.
		sip.cfg	• For more information, refer to 4.6.1.24 Feature <fea-
	Central		• For more information, refer to 4.6.1.24 Feature <fea-
	Central		ture/> on page 144.
	(boot
	server)		Specify the string sent to the server for last-call-return.
			• For more information, refer to 4.6.1.12 Call Handling
			Configuration <call/> on page 125.

		Web Server	None.
	Local	(if enabled)

		Local Phone User	None.
		Local Phone User	None.
		Interface

3.3 Audio Processing Features

Proprietary state-of-the-art digital signal processing (DSP) technology is used to pro- vide an excellent audio experience.

3.3.1 Low-Delay Audio Packet Transmission

The phone is designed to minimize latency for audio packet transmission.

3.3.2 Jitter Buffer and Packet Error Concealment

The phone employs a high-performance jitter buffer and packet error concealment sys- tem designed to mitigate packet inter-arrival jitter and out-of-order or lost (lost or excessively delayed by the network) packets. The jitter buffer is adaptive and config-

56	Copyright © 2006 Polycom, Inc.

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Polycom 1725-11530-200 Rev A1 manual Audio Processing Features, Last Call Return, Low-Delay Audio Packet Transmission

Contents

Administrator’s Guide SoundPoint/SoundStation IP SIP Polycom, Inc Table of Contents Call Management Features Optimization Configuration Files Session Initiation Protocol SIP 163 Viii Copyright 2006 Polycom, Inc Overview Copyright 2006 Polycom, Inc Installation and Operation Installation Models Installation Process Dhcp or Manual TCP/IP Setup Basic Network SetupPhones boot up in two phases Configuration File Local Parameter Provisioning File TransferSubnet mask IP gateway Sntp GMT offset Protocol Specified 300 301, 430600 4000 Main Menu Local User Interface Setup MenusName Possible Values a Description Dhcp Menu Name Possible Description Values Possible Name Values Description Server Menu Name Possible Values Description Reset to Factory Defaults Ethernet Menu Centralized Configuration Application ConfigurationConfiguration Files Master configuration files contain six XML attributes Default Master Configuration File Application Configuration Files Category Description Example Setting Flash Parameters from Configuration Files Name Possible Values Description Name Possible Values Description Boot Server Deployment for the Phones Step Instructions Account-by-account basis Step Instructions Local Phone Configuration Passwords Management of File Encryption and Decryption Changing the Key on the Phone Copyright 2006 Polycom, Inc Page Basic Features Call TimerCall Log Phone maintains a call log. The log Call Waiting Called Party IdentificationCalling Party Identification Missed Call Notification Configurable Feature Keys SoundPoint IP 300 and 301 Key Layout SoundPoint IP 430 Key Layout SoundPoint IP 500 and 501 Key Layout SoundPoint IP 600 and 601 Key Layout IP 500 IP 600 SoundPoint IP 4000 Key Layout Key ID IP 300Function Connected Party Identification Key ID IP 300 Context Sensitive Volume Control Customizable Audio Sound Effects Administration Distinctive Incoming Call Treatment Message Waiting IndicationDistinctive Incoming Call Treatment Distinctive Ringing Distinctive Call Waiting Do-Not-Disturb Handset, Headset, and Speakerphone Local Contact Directory Local Contact Directory File example Local Contact Directory File FormatElement Permitted Values Interpretation Local Digit Map Microphone Mute Multiple Line Keys per Registration Multiple Call Appearances Shared Call Appearances Line-seize subscription for mutual exclusion feature Bridged Line Appearances Figuration files or the local phone user interface should be Customizable Fonts and Indicators Busy Lamp Field Soft Key-Driven User Interface Speed Dial Time and Date Display Set the time and date display formats Automatic Off-hook Call Placement Call Management FeaturesIdle Display Animation Call Hold Call Transfer Three-Way Conference, Local or Centralized Call Diversion Call Forward Directed Call Pick-up Group Call Pick-up Call Park / Retrieve Audio Processing Features Low-Delay Audio Packet TransmissionJitter Buffer and Packet Error Concealment Last Call Return Voice Activity Detection Dtmf Tone Generation Acoustic Echo Cancellation AECDtmf Event RTP Payload Audio Codecs Following table summarizes the phone’s audio codec supportSample Effective Algorithm Presence and Instant Messaging Features Background Noise Suppression BNSComfort Noise Fill Automatic Gain Control AGC Instant Messaging Localization FeaturesMultilingual User Interface Name Range +FF00 U+FFFF Downloadable Fonts Synthesized Call Progress Tones Advanced Server Features Voice Mail Integration SoundPoint IP 500, 501, 600 and 601 instant mes Multiple Registrations Local ACD agent available / unavailable ACD login / logoutServer Redundancy DNS SIP Server Name Resolution Microsoft Office Live Communications Server 2005 Integration Central Modify the sip.cfg configuration file as follows Configuration File ChangesModify the phone1.cfg configuration file as follows Optional Modify the sip.cfg configuration file as follows Accessory Internet Features Security FeaturesLocal User and Administrator Privilege Levels MicroBrowser Incoming Signaling Validation Custom Certificates Configuration File Encryption Administrator’s Guide SoundPoint IP / SoundStation IP Ethernet Switch Application Network SetupSoundPoint IP Switch Port Priorities Real-Time Transport Protocol Ports Working with Network Address Translation Updating and Rebooting Manual Reboot Menu Option or Key Presses Centralized RebootPeriodic Polling For Upgrades Event Logging IP TOS Audio Quality Issues and VLANsLog files uploaded in this manner are named Ieee 802.1p/Q Rtcp Support Configuration Files SIP Configuration sip.cfg Protocol volpProt Local localServer server Permitted Attribute Values Permitted Attribute Values TLS SDP SDP SIP SIP Attribute Values Attribute Values Permitted Attribute Values Default Interpretation Invite Default Interpretation Request Validation requestValidation Attribute Conference Setup conference Attribute Default Interpretation Ues Attribute Permitted Values Default Interpretation Dial Plan dialplanDigit Map digitmap Routing routing Localization localization Emergency emergency Multilingual multilingual Permitted Attribute Values Interpretation Date and Time datetime Adding New Languages User Preferences userpreferences Tones tones Attribute Permitted Default Interpretation ValuesDual Tone Multi-Frequency Dtmf All three blocks use the same chord set specification format Chord Sets chordsets Following sampled audio Wave file .wav formats are supported Attribute Permitted Interpretation Values Following table, x is the sampled audio file number Attribute Permitted Values Interpretation Patterns patterns Sound Effects soundeffectsInstruction Meaning Example 104 Copyright 2006 Polycom, Inc Ringer pattern Number Default description Call Progress PatternsCall progress Use within phone Pattern number Ringer Patterns Miscellaneous Patterns Miscellaneous Use within phone Pattern number Ring type ringType Miscellaneous Pattern number Use within phone Voice Coding Algorithms codecs Voice Settings voiceFollowing voice codecs are supported Codec Profiles profiles Volume Persistence volume Default Interpretation Values Attribute Default Gains gains 112 Copyright 2006 Polycom, Inc Acoustic Echo Cancellation AEC Acoustic Echo Suppression AES Background Noise Suppression NS Automatic Gain Control AGC Receive Equalization Rxeq Transmit Equalization Txeq Voice Activity Detection VAD Quality of Service QOSEthernet Ieee 802.1p/Q Ethernet Call Control CallControl IP TOS IPOther Other 120 Copyright 2006 Polycom, Inc Attribute Permitted Values Default Basic TCP/IP TcpipNetwork Monitoring netMon Time Synchronization Sntp 122 Copyright 2006 Polycom, Inc Copyright 2006 Polycom, Inc 123 1.10.3 Port port 1.10.3.1 Configuration cfg Call Handling Configuration callWeb Server Httpd Shared Calls shared Attribute Values Default Interpretation Hold, Local Reminder hold/localReminder Directory directory Presence presence Fonts font 501 Example of use 1.15.2 IP500 font IP500 1.15.1 IP400 font IP4001.15.3 IP600 font IP600 Keys keys Following table lists the functions that are available Platform IP300/, IP400/, IP500/, IP600/ and IP4000 Bitmaps bitmapsBitmaps used by the phone are defined in this section Indicators indicators Classes Classes Assignments Assignments LEDs led Following table, x is the LED numberGraphic Icons gi/ IP300/, IP400/, IP500/, IP600/ and IP4000 Event Logging logging Level Interpretation Three formats are available for the event timestamp Basic Logging level/change/ and renderType Example Copyright 2006 Polycom, Inc 139 Security security These settings affect security aspects of the phoneScheduled Logging Parameters scheduled Password Lengths pwd/length Encryption encryption Provisioning provisioning RAM Disk RAMdisk Delay delay Request request Feature feature Finder finder Resource resourceQuotas quotas MicroBrowser microbrowser Idle Display idleDisplay Main Browser main Browser Limits limits 148 Copyright 2006 Polycom, Inc Per-phone Configuration phone1.cfg Registration reg 150 Copyright 2006 Polycom, Inc Copyright 2006 Polycom, Inc 151 152 Copyright 2006 Polycom, Inc Calls call Automatic Off-hook Call Placement autoOffHookDo Not Disturb donotdisturb Missed Call Configuration serverMissedCall Diversion divert Calls can be automatically diverted when the phone is busy Forward All fwdBusy busy No Answer noanswer Do Not Disturb dnd Copyright 2006 Polycom, Inc 157 158 Copyright 2006 Polycom, Inc Message Waiting Indicator mwi Messaging msg Network Address Translation nat Attendant attendant Roaming Buddies roamingbuddies Roaming Privacy roamingprivacy Basic Protocols RFC and Internet Draft SupportRequest Support Title Header Support Header Supported Copyright 2006 Polycom, Inc 165 Response Support 4.1 1xx Responses Provisional4.2 2xx Responses Success Response Supported 4.3 3xx Responses Redirection 4.4 4xx Responses Request Failure 4.5 5xx Responses Server Failure Hold Implementation Reliability of Provisional ResponsesTransfer Third Party Call Control Protocol Extensions Phone supports the following SIP protocol extensions Shared Call Appearance Signaling Or their successors Bridged Line Appearance Signaling Dialog for bridged line appearance subscribe and notify Appendix Trusted Certificate Authority List 174 Copyright 2006 Polycom, Inc Miscellaneous Administrative Tasks Adding a Background LogoModel Width Height Color Depth RGB Values Color Decimal Configuration File Changes Third Party Software Attribution 178 Copyright 2006 Polycom, Inc Copyright 2006 Polycom, Inc 179 Curl Copyright and Permission Notice