HandyTone | Grandstream Networks, Inc. |
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| G723 Rate: |
| This defines the encoding rate for G723 vocoder. By default, 6.3kbps rate is |
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| iLBC frame size |
| This defines the size of the iLBC codec frame. The default setting is 20ms. |
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| iLBC payload type |
| This defines the iLBC payload type. The default setting is 97. The valid range |
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| is between 96 and 127. |
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| Silence Suppression |
| This controls the silence suppression/VAD feature of G723 and G729. If set to |
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| “Yes”, when a silence is detected, small quantity of VAD packets (instead of |
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| audio packets) will be sent during the period of no talking. If set to “No”, this |
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| feature is disabled. |
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| Voice Frames per |
| This field contains the number of voice frames to be transmitted in a single |
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| TX |
| packet. When setting this value, the user should be aware of the requested |
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| packet time (used in SDP message) as a result of configuring this parameter. |
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| This parameter is associated with the first vocoder in the above vocoder |
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| Preference List or the actual used payload type negotiated between the 2 |
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| conversation parties at run time. |
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| e.g., if the first vocoder is configured as G723 and the “Voice Frames per TX” |
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| is set to be 2, then the “ptime” value in the SDP message of an INVITE request |
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| will be 60ms because each G723 voice frame contains 30ms of audio. |
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| Similarly, if this field is set to be 2 and if the first vocoder chosen is G729 or |
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| G711 or G726, then the “ptime” value in the SDP message of an INVITE |
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| request will be 20ms. |
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| If the configured voice frames per TX exceeds the maximum allowed value, the |
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| phone will use and save the maximum allowed value for the corresponding first |
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| vocoder choice. The maximum value for PCM is 10(x10ms) frames; for G726, |
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| it is 20 (x10ms) frames; for G723, it is 32 (x30ms) frames; for G729/G728, 64 |
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| (x10ms) and 64 (x2.5ms) frames respectively. |
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| Fax Mode |
| T.38 (Auto Detect) FoIP by default, or |
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| PCMU/PCMA) |
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| Layer 3 QoS |
| This field defines the layer 3 QoS parameter which can be the value used for IP |
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| Precedence or |
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| Layer 2 QoS |
| This setting includes two fields. The 802.1Q/VLAN Tag contains the value |
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| used for layer 2 VLAN tag. Default setting is blank. And 802.1p priority value |
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| contains the value of the priority value. |
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| Allow incoming SIP |
| If set to “Yes”, the device will ignore any SIP message that does not come from |
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| messages from SIP |
| the IP address (Source IP in the IP header) that it is registered to. Default is |
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| proxy only |
| No. |
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| Use DNS SRV |
| This parameter controls whether the IP phone supports the DNS SRV route |
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| function. |
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