How Internet speeds and connection relate to call quality.

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dan1 asked Jun 18, '15 dan1 commented Jun 18, '15

How Internet speeds and connection relate to call quality.

I upgraded my internet to Time Warner Turbo class. I get 22Mbps down and 2.1Mbps upload, tested on speedtest.net. It's been very fast and consistent. What I need to know is how these phones use the internet connection, and what kind of load it puts on my bandwidth. I work from home and there may be times when I have a streaming music feed running and a call will come in and the sound is all digitized and garbled up the point where I can barely hear the other person. I can shut down streaming feeds and it improves slightly, almost immediate. My question is WHY?

Do these internet phones (Cisco SPA525) use mainly upload speed while on calls, because I should have more than enough speed on the down side.

I also tried giving the phone a direct rj45 line to the router instead of through any hubs or switches but it didn't really seem to matter. I'm looking for any suggestions on improving my call connection quality.

Thanks in advance!

call quality qos

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Answer 1 · 2015-06-18T16:22:28Z

Michael Dury answered Jun 18, '15

Dan,
1 phone call is about 100Kb which is not much.
What type of router do you have? you may want to turn on QOS (Traffic shaping) also, on the same site , try a pingtest. If jitter or packet loss exist, the call is going to sound bad
http://www.ringcentral.com/support/qo...

HTH

MD

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Answer 2 · 2015-06-18T16:30:21Z

mike-goodwin844 answered Jun 18, '15 dan1 commented Aug 12, '16

Hi Dan,

RingCentral phones use about 100kb/s both up and down when on a call. The best way to improve your voice quality for calls when doing other network intensive activities such as watching videos or streaming music is to set up your router for QoS if it supports it. QoS will allow you to prioritize the traffic on your network. Voice traffic is very fragile so giving it a high priority can make a very big difference in the quality of your calls.

If your router does not support QoS, you can find a list of our recommended routers here. If you have a router/modem combo that was provided by your ISP, those tend to not function very well with our service. I recommend you purchase a new router from the aforementioned list, and call your ISP asking them to put their device into bridge mode.

Each router functions a bit differently so if you cannot figure out how QoS works on yours, please be sure to review the documentation on your router as that often details the setup. Additionally, for some of the routers on our recommended list, there are documents on that list that detail the proper setup of QoS.

If you need additional assistance, please create a ticket and we will be more than happy to help point you in the right direction.

I hope this helps you!
- Mike Goodwin
RingCentral Tier 3 Support

QoS How do I troubleshoot Call Quality issues? Network requirements?

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dan1 commented · Jun 18, 2015 at 05:34 PM

Great info, thanks guys. I'll go inspect our router!

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