Panasonic KX-TDA0490 Programming Manual

Also see for KX-TDA0490: Getting started Getting started

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Panasonic KX-TDA0490 Programming Manual Manual pdf 19 page image

2.2 ProgrammingProgramming Guide 19You will see a confirmation screen.NoteIf your entry contains an invalid value, you will be prompted to correct your input. Entercorrect values for the parameters shown in red and try again.4. Confirm your entry and click OK.To return to the previous screen, click CANCEL.Parameter DescriptionsQoS Field SettingsThe parameters below are used to set the ToS (Type of Service) field in the header of IP packets to controlQoS of VoIP communications.For more information about QoS, refer to "A1.4 QoS (Quality of Service)" of the VoIP Gateway Card GettingStarted. For the actual setting values, consult your network administrator.Jitter Buffer SettingsWhen voice signals are packetized and transmitted, individual packets can take different paths through thenetwork and arrive at the destination at varied timings. This is referred to as "jitter", and it can causedegradation in speech quality. To compensate for jitter problems, the "jitter buffer" accumulates the packetstemporarily for processing.The parameters below are used to adjust the size of the jitter buffer. However, in general, there is no need tochange the default values.Jitter buffer Settings (G.711/G.729A/G.723.1 for Voice)Parameter & Description Default Value RangeToSSpecifies the value in the ToS field by a generic term.For details, refer to "Detailed Explanations".Priority: 0 0 to 7Normal Normal,Monetary Cost,Reliability,Throughput,DelayDSCPSpecifies the value in the ToS field by a DSCP for DiffServ.No default 0 to 63HEXSpecifies the value in the ToS field by a hexadecimal number.No default 00 to FFParameter Default Value RangeJitter Buffer Minimum (ms) 20 10 × n (n = 2–10)Jitter Buffer Maximum (ms) 500 10 × n (n = 2–50)Jitter Buffer Default (ms) 20 10 × n (n = 2–10)Jitter Buffer Recovery Start (ms) 200 10 × n (n = 2–10)Jitter Buffer Recovery Period (s) 10 1 to 20