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| − | = Voice only analysis =
| + | * [[Traffic measurements Audio]] |
| − | | + | * [[Traffic measurements Video]] |
| − | The following screenshot shows network-traffic (in Bytes/s) for the following connections:
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| − | * '''Black''': traffic from and to Trixbox #1 | |
| − | * '''Red''': traffic between the 2 Windows machines running X-lite
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| − | * '''Green''': traffic between laptop #1 and its Asterisk
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| − | * '''Blue''': traffic between the two Asterisk PBX's
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| − | * '''Pink''': traffic between Windows machine #1 and its Asterisk
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| − | [[Image:ethereal_graph_voice-only.png]] | |
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| − | From the graph shown above there can be concluded that indeed the two X-Lite machines are only connected to their own Trixbox, i.e. there is no ''direct'' traffic between the two X-Lite machines.
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| − | | |
| − | = Voice and video analysis =
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| − | Schematic sketch of the situation:
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| − | [[image:Schematic overview asterisks and sip-phones.gif]] | |
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| − | In the screenshot below, the following events were measured:
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| − | * @4 sec: Video was turned on
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| − | * @14 sec: Video was set to black (connection lost with DVdriver)
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| − | * @20 sec: Video showed moving pictures again.
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| − | [[Image:ethereal_graph_voice_and_one-way-video.png]]
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| − | Legenda:
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| − | * '''Black''': traffic from and to Trixbox #1
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| − | * '''Red''': traffic between the 2 Windows machines running X-lite
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| − | * '''Green''': traffic between laptop #1 and its Asterisk
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| − | * '''Blue''': traffic between the two Asterisk PBX's
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| − | * '''Pink''': traffic between Windows machine #1 and its Asterisk
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| − | The following graph shows the traffic is almost constant.
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| − | Till 35sec the conversation included audio and video. The rest is audio-only.
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| − | [[Image:ethereal_graph_voice_and_one-way-video2.png]]
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| − | This measurement shows there is no traffic between both SIP-phones, only via (both) Asterisk PBX.
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| − | | |
| − | = Differences between voice and video =
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| − | For this test, we connected 2 SIP phones to the same Asterisk PBX.
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| − | We meassured the bandwitdh used between the following 3 points:
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| − | | |
| − | # SIP-phone #1 with camera
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| − | # SIP-phone #2 without camera
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| − | # Asterisk PBX
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| − | | |
| − | [[image:ethereal_graph_difference_voice and video.png]]
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| − | | |
| − | Legenda:
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| − | * Black shows audio & video from SIP-phone #1 to the PBX (video starting at the 10<sup>th</sup> second)
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| − | * Blue shows audio-only from SIP-phone #2 to the PBX
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| − | * Pink shows all traffic between SIP-phone #1 and the PBX (both directions)
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