[VoiceOps] HPBX over ADSL

Colton Conor colton.conor at gmail.com
Sun Dec 6 15:17:23 EST 2015


Ah, I have heard about these Obihai phones that support OPUS, but have not
tried them. How do the compare to a Polycom VVX phones?

The Polycom VVX 500 and 600 now support OPUS, but you must disable video. I
find that kind of silly as one of the main reasons to buy a VVX 500 or VVX
600 is the support of video.

What other phones and hardware devices today support OPUS?

On Sun, Dec 6, 2015 at 1:42 PM, Ryan Delgrosso <ryandelgrosso at gmail.com>
wrote:

> Yes it does.
>
> We are using Obihai phones which support opus as well as soft clients for
> desktop and mobile.
>
> On 12/6/2015 8:33 AM, Colton Conor wrote:
>
> But doesn't the device at the customer prem have to speak OPUS to get the
> benefit as well? What devices are you using at the customer prem that speak
> OPUS? I am assuming you conver back to g711 at the SBC in the datacenter.
>
> On Sun, Dec 6, 2015 at 12:42 AM, Ryan Delgrosso <ryandelgrosso at gmail.com>
> wrote:
>
>> Metaswitch but as its not really media handling it isnt terribly
>> relevant.
>>
>> The latest Oracle SBC;s will transcode Opus as will many software
>> platforms (Freeswitch, Frafos, etc)
>>
>>
>> On 12/5/2015 9:15 AM, Colton Conor wrote:
>>
>> Ryan,
>>
>> What voice platform are you using with OPUS?
>>
>> On Thu, Dec 3, 2015 at 12:42 PM, Ryan Delgrosso <
>> <ryandelgrosso at gmail.com>ryandelgrosso at gmail.com> wrote:
>>
>>> Hi Anthony,
>>> We do this pretty frequently with a high success rate. It really depends
>>> on the site size and usage patterns.
>>>
>>> A couple of things to keep in mind:
>>>
>>>    1. If its a 1-2 user remote office the service profile is realy no
>>>    different than a residential user. Deploy accordingly.
>>>    2. For higher user density sites we usually will deploy some kind of
>>>    edge router (edgemarc / simplewan etc). A small amount of QOS at egress
>>>    goes a long way on asymmetrical connections.
>>>    3. Abandon G711 where possible for a FEC codec (Opus is my weapon of
>>>    choice). A tiny amount of packet loss or jitter on Opus makes zero
>>>    difference. A larger amount of packet loss, which would generate clicks and
>>>    pops on G711 will not be as noticable over Opus (and still sound superior
>>>    to most cell conversations. If necessary transcode at edge to support this.
>>>    4. Abandon standard ports. This is really more about avoiding
>>>    psuedo-intelligent ALG's in the path for the 1-2 user sites.
>>>    5. Be reasonable. Nobody is going to (ok some will try but it should
>>>    be advised against) run a 200+ user shop on adsl.
>>>
>>> I'm happy to discuss in more depth offline if you have specific questions
>>>
>>> -Ryan
>>>
>>> On 12/2/2015 2:25 PM, Anthony Orlando via VoiceOps wrote:
>>>
>>> Is anyone having success deploying HPBX over DSL?  Not service providers
>>> that own the plant but those of you using another providers DSL.  Have you
>>> been successful?  If so what were the engineering guidelines you used?
>>> What were the tolerances you used?  Any feedback would be very welcomed.
>>>
>>>
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>>
>>
>
>
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