NetComm Gateway Series manual Codec Settings

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Codec Settings

•Preferred Codec Type: Since different voice codecs have different compression ratios, so the sound quality and occupied bandwidths will also be different. It is recommended that you use the default provided (G.729) because it is popular and will provide better sound quality.

•Jitter Buffer: Adjusts the jitter to receive a packet. If the jitter range is too wide, it will delay voice transmission.

•Silence Detection/Suppression: If one side of a connection is not speaking, the system will stop sending voice data (packet) to decrease bandwidth usage.

•Echo Cancellation: Prevents voice quality caused by echo interference.

•Packet Interval: Defines how long the VoIP gateway sends a RTP packet to the other party of a VoIP conversation. The smaller the value, the more bandwidth usage. The larger the value, the more voice delay.

•Approximate Bandwidth Require: The bandwidth required varies with codec format and packet time.

40	SmartVoice Gateway(s) User Guide
	YML832 Rev2

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Contents Reference Guide Contents Important Note To ensure your Gateway complies with Australian StandardsIntroduction Product OverviewBroadband Service VoIP ServiceItems that you will need and things you will need to know Computer/NetworkVoice Features NetComm SmartVoice Gateway FeaturesAdvance Firewall and DoS Protection Configuration & Maintenance Features are only available in models which have FXO ports General SpecificationsNetwork SmartVoice Gateways User Guide YML832 Rev2 Restore the Gateway Rear Panel all modelsInstallation and Applications Connecting your SmartVoice GatewaysGateway Assigned with a Public IP Address Network ConnectionsNetwork requirements Gateway behind a NAT/Firewall Network RequirementsStun client Needs to be set up as either in static IP, DHCP, or PPPoE Telephone Connection Integrating the SmartVoice Gateway with PBXIntegrating the SmartVoice Gateway with PBX Integrating the SmartVoice Gateway with PBX Configuring the Gateway via WEB Browser InstructionsNetwork Settings IP Configuration Setting WAN PortSetting Dynamic IP Dhcp DNS Settings Clone MACLAN interface mode Network Settings LANQoS Settings WAN QoSNAT/DDNS NAT Traversal Ddns ExampleTelephony Settings Prefix Number RulesFXO Line VoIP call in options Hotline FunctionsDescription SIP Settings 164 SmartVoice Gateways User Guide FXS/ FXO Representative number registers to Proxy Each line registers to Proxy independentlyServer Settings Private NetworkPrivate Network Numbers Calling Features Calling Feature InstructionsAdvanced Options Payload Type payload type of RFC2833 Line Settings Flash TimeCodec Settings Fax Settings Drop Inactive Call Digit Map Phone Book Speed Dial Caller Filter Transit Call Control Dialing principle to enable PIN code Gateway a PIN Code * Gateway B NumberLong-Distance Control Table Long Distance Exception TableBusy Tone Cadence Measurement CPT/Cadence SettingsCPT parameters Table CPT Auto Detect Direct Connection to Pstn SmartVoice Gateways User Guide YML832 Rev2 Connected to a PBX Extension Line 36008914 Save Settings Filling in the CPT TableCurrent Status and System Information RTP Packet Summary Stun Inquiry Ping Test Port Filtering IP Filtering MAC Filtering Virtual Server DMZ URL Filter Special Applications DoS Prevention Settings Enable Source IP Blocking Block the IP Backup and Restore Configuration NTP Network Time ProtocolProvision Settings System Operations Save Settings Software Upgrade Logout Configuration Methods Configuring the Gateway via IVRPreparation IVR Interactive Voice Response Inquire Current Gateway’s WAN Port IP addressIVR Functions Table DNS IP address Set/QuerySet/Query Gateway Telephone Number Representative Number IP Configuration Settings WAN port Static IP Settings Adsl PPPoE SettingsPPPoE Account Settings PPPoE Password SettingSave Settings and Restart Select PPPoEPPPoE Character Conversion Table Instruction Dialing and dialed number routing principleDialed Number Processing Flow End Appendix a Glossary 10BASE-TDNS Http NAT TCP VSP Appendix B Cable Information RJ-45 Network PortsStraight-Through Cabling Straight and crossover cable configurationCross-Over Cabling Appendix C Registration and Warranty Information Contact InformationProduct Warranty PO Box 1200, Lane Cove NSW 2066 Australia