Acoustic Echo Cancellation AEC | Polycom 1725-11530-200 Rev A1

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

Optimization

4.6.1.8.4 Acoustic Echo Cancellation <AEC/>

These settings control the performance of the speakerphone acoustic echo canceller.

Note

Polycom recommends that you do not change these values.

Attribute	Default

voice.aec.hs.enable	0

voice.aec.hs.lowFreqCutOff	100

voice.aec.hs.highFreqCutOff	7000

voice.aec.hs.erlTab_0_300	-24

voice.aec.hs.erlTab_300_600	-24

voice.aec.hs.erlTab_600_1500	-24

voice.aec.hs.erlTab_1500_3500	-24

voice.aec.hs.erlTab_3500_7000	-24

voice.aec.hd.enable	0

voice.aec.hd.lowFreqCutOff	100

voice.aec.hd.highFreqCutOff	7000

voice.aec.hd.erlTab_0_300	-24

voice.aec.hd.erlTab_300_600	-24

voice.aec.hd.erlTab_600_1500	-24

voice.aec.hd.erlTab_1500_3500	-24

voice.aec.hd.erlTab_3500_7000	-24

voice.aec.hf.enable	1

voice.aec.hf.lowFreqCutOff	100

voice.aec.hf.highFreqCutOff	7000

voice.aec.hf.erlTab_0_300	-6

voice.aec.hf.erlTab_300_600	-6

voice.aec.hf.erlTab_600_1500	-6

voice.aec.hf.erlTab_1500_3500	-6

voice.aec.hf.erlTab_3500_7000	-6

Copyright © 2006 Polycom, Inc.

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Polycom 1725-11530-200 Rev A1 manual Acoustic Echo Cancellation AEC

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 Models Installation and Operation Installation Process Dhcp or Manual TCP/IP Setup Basic Network SetupPhones boot up in two phases Provisioning File Transfer Configuration File Local ParameterSubnet mask IP gateway Sntp GMT offset Protocol Specified 300 301, 430600 4000 Main Menu Local User Interface Setup MenusName Possible Values a Description Name Possible Description Values Dhcp Menu Possible Name Values Description Name Possible Values Description Server Menu Ethernet Menu Reset to Factory Defaults Centralized Configuration Application ConfigurationConfiguration Files Default Master Configuration File Master configuration files contain six XML attributes Category Description Example Application Configuration Files Setting Flash Parameters from Configuration Files Name Possible Values Description Name Possible Values Description Boot Server Deployment for the Phones Account-by-account basis Step Instructions Step Instructions Local Phone Configuration Management of File Encryption and Decryption Passwords Changing the Key on the Phone Copyright 2006 Polycom, Inc Page Call Timer Basic FeaturesCall Log Phone maintains a call log. The log Called Party Identification Call WaitingCalling Party Identification Missed Call Notification Configurable Feature Keys SoundPoint IP 430 Key Layout SoundPoint IP 300 and 301 Key Layout SoundPoint IP 600 and 601 Key Layout SoundPoint IP 500 and 501 Key Layout IP 500 IP 600 SoundPoint IP 4000 Key Layout Key ID IP 300Function Key ID IP 300 Connected Party Identification Customizable Audio Sound Effects Context Sensitive Volume Control Message Waiting Indication Administration Distinctive Incoming Call TreatmentDistinctive Incoming Call Treatment Distinctive Ringing Do-Not-Disturb Distinctive Call Waiting Handset, Headset, and Speakerphone Local Contact Directory Local Contact Directory File example Local Contact Directory File FormatElement Permitted Values Interpretation Local Digit Map Multiple Line Keys per Registration Microphone Mute 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 Busy Lamp Field Customizable Fonts and Indicators Speed Dial Soft Key-Driven User Interface Time and Date Display Set the time and date display formats Automatic Off-hook Call Placement Call Management FeaturesIdle Display Animation Call Transfer Call Hold Three-Way Conference, Local or Centralized Directed Call Pick-up Call Diversion Call Forward Call Park / Retrieve Group Call Pick-up Low-Delay Audio Packet Transmission Audio Processing FeaturesJitter Buffer and Packet Error Concealment Last Call Return Voice Activity Detection Dtmf Tone Generation Acoustic Echo Cancellation AECDtmf Event RTP Payload Following table summarizes the phone’s audio codec support Audio CodecsSample Effective Algorithm Background Noise Suppression BNS Presence and Instant Messaging FeaturesComfort Noise Fill Automatic Gain Control AGC Instant Messaging Localization FeaturesMultilingual User Interface +FF00 U+FFFF Name Range Synthesized Call Progress Tones Downloadable Fonts Voice Mail Integration Advanced Server Features SoundPoint IP 500, 501, 600 and 601 instant mes Multiple Registrations Local ACD agent available / unavailable ACD login / logoutServer Redundancy Microsoft Office Live Communications Server 2005 Integration DNS SIP Server Name Resolution 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 Security Features Accessory Internet FeaturesLocal User and Administrator Privilege Levels MicroBrowser Custom Certificates Incoming Signaling Validation Configuration File Encryption Administrator’s Guide SoundPoint IP / SoundStation IP Application Network Setup Ethernet SwitchSoundPoint IP Switch Port Priorities Real-Time Transport Protocol Ports Working with Network Address Translation Updating and Rebooting Centralized Reboot Manual Reboot Menu Option or Key PressesPeriodic 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 SIP Configuration sip.cfg Configuration Files Local local Protocol volpProtServer server Permitted Attribute Values Permitted Attribute Values TLS SIP SIP SDP SDP Attribute Values Attribute Values Invite Permitted Attribute Values Default Interpretation Request Validation requestValidation Attribute Default Interpretation Default Interpretation Ues Conference Setup conference Attribute Dial Plan dialplan Attribute Permitted Values Default InterpretationDigit Map digitmap Routing routing Emergency emergency Localization localization Permitted Attribute Values Interpretation Multilingual multilingual Adding New Languages Date and Time datetime User Preferences userpreferences Tones tones Attribute Permitted Default Interpretation ValuesDual Tone Multi-Frequency Dtmf Chord Sets chordsets All three blocks use the same chord set specification format Attribute Permitted Interpretation Values Following sampled audio Wave file .wav formats are supported Attribute Permitted Values Interpretation Following table, x is the sampled audio file number Patterns patterns Sound Effects soundeffectsInstruction Meaning Example 104 Copyright 2006 Polycom, Inc Call Progress Patterns Ringer pattern Number Default descriptionCall progress Use within phone Pattern number Ringer Patterns Miscellaneous Use within phone Pattern number Miscellaneous Patterns Miscellaneous Pattern number Use within phone Ring type ringType Voice Coding Algorithms codecs Voice Settings voiceFollowing voice codecs are supported Codec Profiles profiles Default Interpretation Values Volume Persistence volume Gains gains Attribute Default 112 Copyright 2006 Polycom, Inc Acoustic Echo Cancellation AEC Acoustic Echo Suppression AES Automatic Gain Control AGC Background Noise Suppression NS 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 Basic TCP/IP Tcpip Attribute Permitted Values DefaultNetwork Monitoring netMon Time Synchronization Sntp 122 Copyright 2006 Polycom, Inc Copyright 2006 Polycom, Inc 123 1.10.3.1 1.10.3 Port port Configuration cfg Call Handling Configuration callWeb Server Httpd Shared Calls shared Hold, Local Reminder hold/localReminder Attribute Values Default Interpretation Directory directory Fonts font Presence presence Example of use 501 1.15.2 IP500 font IP500 1.15.1 IP400 font IP4001.15.3 IP600 font IP600 Following table lists the functions that are available Keys keys Platform IP300/, IP400/, IP500/, IP600/ and IP4000 Bitmaps bitmapsBitmaps used by the phone are defined in this section Indicators indicators Assignments Assignments Classes Classes LEDs led Following table, x is the LED numberGraphic Icons gi/ IP300/, IP400/, IP500/, IP600/ and IP4000 Level Interpretation Event Logging logging 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 Encryption encryption Password Lengths pwd/length RAM Disk RAMdisk Provisioning provisioning Request request Delay delay Feature feature Finder finder Resource resourceQuotas quotas Idle Display idleDisplay MicroBrowser microbrowser Browser Limits limits Main Browser main 148 Copyright 2006 Polycom, Inc Registration reg Per-phone Configuration phone1.cfg 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 Diversion divert Missed Call Configuration serverMissedCall Forward All fwd Calls can be automatically diverted when the phone is busyBusy busy No Answer noanswer Do Not Disturb dnd Copyright 2006 Polycom, Inc 157 158 Copyright 2006 Polycom, Inc Messaging msg Message Waiting Indicator mwi Network Address Translation nat Roaming Buddies roamingbuddies Attendant attendant Roaming Privacy roamingprivacy RFC and Internet Draft Support Basic ProtocolsRequest Support Title Header Supported Header Support Copyright 2006 Polycom, Inc 165 4.1 1xx Responses Provisional Response Support4.2 2xx Responses Success Response Supported 4.4 4xx Responses Request Failure 4.3 3xx Responses Redirection 4.5 5xx Responses Server Failure Reliability of Provisional Responses Hold ImplementationTransfer Third Party Call Control Phone supports the following SIP protocol extensions Protocol Extensions Or their successors Shared Call Appearance Signaling Dialog for bridged line appearance subscribe and notify Bridged Line Appearance Signaling Trusted Certificate Authority List Appendix 174 Copyright 2006 Polycom, Inc Adding a Background Logo Miscellaneous Administrative TasksModel 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 Copyright and Permission Notice Curl