2.2 Programming
You will see a confirmation screen.
Note
If your entry contains an invalid value, you will be prompted to correct your input. Enter correct 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 Descriptions
QoS Field Settings
The parameters below are used to set the ToS (Type of Service) field in the header of IP packets to control QoS of VoIP communications.
Parameter & Description | Default | Value Range | |
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ToS | Priority: 0 | 0 to 7 | |
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Specifies the value in the ToS field by a generic term. | Normal | Normal, | |
For details, refer to "Detailed Explanations". |
| Monetary Cost, | |
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| Reliability, |
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| Throughput, |
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| Delay |
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DSCP | No default | 0 to 63 | |
Specifies the value in the ToS field by a DSCP for DiffServ. |
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HEX | No default | 00 to FF | |
Specifies the value in the ToS field by a hexadecimal number. |
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Jitter Buffer Settings
When voice signals are packetized and transmitted, individual packets can take different paths through the network and arrive at the destination at varied timings. This is referred to as "jitter", and it can cause degradation in speech quality. To compensate for jitter problems, the "jitter buffer" accumulates the packets temporarily for processing.
The parameters below are used to adjust the size of the jitter buffer. However, in general, there is no need to change the default values.
Jitter buffer Settings (G.711/G.729A/G.723.1 for Voice)
Parameter | Default | Value Range |
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Jitter Buffer Minimum (ms) | 20 | 10 × n (n = |
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Jitter Buffer Maximum (ms) | 500 | 10 × n (n = |
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Jitter Buffer Default (ms) | 20 | 10 × n (n = |
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Jitter Buffer Recovery Start (ms) | 200 | 10 × n (n = |
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Jitter Buffer Recovery Period (s) | 10 | 1 to 20 |
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Programming Guide | 19 |
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