Posted:
Sun Jul 15, 2007 12:39 pm Post subject: Details from scratch to set up a VOIP here in Chennai !
Hello Folks, I am from Chennai. I am using Airtel Broadband - 256 Kpbs. Usually get a download speed of 28-30KB/sec.
I am not too well versed with this. I want to set up a Voip system at my home to make calls to the US. Can someone please tell me the detailed steps from scratch to be followed from the beginning please?
I tried following the forum and the discussed topics but I am not able to get a clear view. Can you guys who are well informed let me know the steps to install a Voip set up in detail. As of now I have a DSL model as well as an ethernet modem (Beetel).
I can provide more information if you specifyu Looking forward to your help Thanks in advance !
First, to be clear, Vonage recommends a minimum speed of 90 kbps (kilobits per second). What you have is 30 kBps (kiloBytes per second) or 240 kbps. Is that correct?
If so, you have plenty of bandwidth. Please review this thread and see if it answers your questions. If not, we'll be here. It would be a good idea to run the forum Voip speed test (under the drop down menu). Post the detailed results here.
Given your current Internet speeds, we estimate that your Internet connection can support a maximum of 2 simultaneous high quality Vonage® Voip connections.
My Results Download 234,560 bps Upload 199,824 bps QOS 50% RTT 298 ms MaxPause 602 ms
Speed test statistics --------------------- Download speed: 234560 bps Upload speed: 199824 bps Quality of service: 50 % Download test type: socket Upload test type: socket Maximum download pause: 602 ms Average download pause: 119 ms Minimum round trip time to server: 298 ms Average round trip time to server: 309 ms
Voip test statistics -------------------- Jitter: you --> server: 2.2 ms Jitter: server --> you: 7.7 ms Packet loss: you --> server: 0.0 % Packet loss: server --> you: 0.0 % Packet discards: 0.0 % Packets out of order: 0.0 % Number of supported Voip lines: 3 Estimated MOS score: 3.9
MySpeed Detail for Test #40081 Summary This report refers to a connection test carried out by IP address [hidden] on Jul 16, 2007 11:23:12 PM.
Download speed 234 Kbps (socket test) Upload speed 199 Kbps (socket test) Quality of service 50 % Maximum pause 602 ms Round trip time 298 ms Upstream jitter 2.2 ms Upstream packet loss 0 % Upstream packet order 100 % Upstream discards 0 % Downstream jitter 7.7 ms Downstream packet loss 0 %
Bandwidth Test The graphs below illustrate various properties of your Internet connection obtained during the test process. They show the throughput, data and service quality of your connection.
Download speed graph: This graph illustrates how your download speed fluctuates over time. You may notice that the maximum download speed shown on the graph is more than the connection speed rated by your ISP. This is usually due to how your connection is regulated. For example, an ISP may supply a 10 Mbit connection by allowing 100 Mbit for 10ms, and pause for 90ms. The higher the download speed, the better, but a quality connection will also demonstrate very little fluctuation in download speeds. If the graph below shows a rapidly changing speed then this indicates that the data is impacted and the quality of service degraded. Whilst this does not necessarily affect applications such as email it will definitely affect multimedia applications such as video or voice.
TCP pause graph: Data is sent across the Internet in "blocks". Usually a connection will send a block of data and pause before sending the next. (This pause is known as the TCP pause.) The graph illustrates the TCP pause between receiving subsequent blocks of data. If the pauses become excessive it means that the connection throughput is being degraded. A good connection will have both a low TCP pause (less than 20 ms), and also demonstrate very little fluctuation in the TCP pause values. This in essence defines a quality of data as it defines how much of the test time was spent actually transmitting data versus being idle waiting for data to arrive. The - - - - - line shows the maximum TCP pause recorded. If you see many TCP pauses exceeding 80-100ms then it is likely that the connection test is spending more time waiting for data than moving data. If the TCP pause pattern looks very symmetrical and regular then it may indicate that there is a throttling process managing/restricting the data flow. If the TCP pause pattern is more erratic and variable then it would indicate network delays as a result of congestion or other network problems.
You can download the raw data used to produce these graphs. Download data in Text Excel format
Voip Quality Test The graph below shows the variance of UDP jitter over time. For voice-over-IP application, this variance must be kept to a minimum otherwise call quality will be degraded. Packet loss is shown in red. High packet loss (for example more than 5% sustained over a short period) will result in broken sound during calls.
Hello Mr.Steve, All I had done is followed what you had asked me to and copy pasted my result. I do not know to interpret them with regard to Voip performance. Can you tell me what exactly will go wrong now? In case, I upgrade my internet speed to twice the speed of present speed, will it make things better? Also, I want to know where to get there hardware related to the Voip such as what MODEMS, ROUTERS, etc etc, I should buy. Thanking you, Lovboy
Hello Mr.Steve, All I had done is followed what you had asked me to and copy pasted my result. I do not know to interpret them with regard to Voip performance. Can you tell me what exactly will go wrong now?
Lovboy, I hate to be the bearer of bad news, but your service seems to have high delays and turn around times. This will result in choppy, perhaps unintelligible phone service. For example, your test shows a max pause of 602 ms. That's 6/10 of a second! Can you imagine a pause of 6/10 of a second in the middle of a word? To be fair, if it happened rarely it might not be too disruptive, but even your average round trip time to the server is high. I really can't recommend Voip with service like that.
Quote:
In case, I upgrade my internet speed to twice the speed of present speed, will it make things better?
It might, but your overall bandwidth is already reasonably good. It's those latencies that are killers. Your ISP may do better for higher priced service, but we don't know at this point.
Quote:
Also, I want to know where to get there hardware related to the Voip such as what MODEMS, ROUTERS, etc etc, I should buy. Thanking you, Lovboy
If you're determined to do this, what you'll need depends on what you already have. If you already have a router, then all you need is a simple Vonage adapter. If you don't have a router, then you'll either need a router plus a simple adapter, or a combination router/adapter. An example of a simple adapter is the D-link VTA. An example of a combination router/adapter is the Motorola VT2442. Look on the Vonage site under products and you'll see what they offer. They won't, however, ship to India. You would have to get your equipment at retail or provide Vonage with a US address. The adapter must be one that's designated for Vonage. A separate router doesn't have to be.
Lovboy, Me too from Chennai. I'm also in a desperate need of a Voip connection @ home. Can you just let me know what did you do? Did you get a connection or not? I would be feeling great if you can just let me know.
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