[asterisk-biz] Unlimited DID

Thu Aug 14 15:17:30 CDT 2008

Jai,

I'm sure your company's current service is excellent.  Just recommending a 
thorough look at all of the potential issues if you're planning to offer such an 
"unlimited" service.  Too many companies have failed because they didn't.

Jai Rangi wrote:
> I feel that most of the folks in asterisk community are very smart and they
> know what they are doing. In fact some of you are exceptionally good.
> Anyone who get in the business and want to offer this kind of service must
> have to spend tons of hours and lots of money before they offer service
> specially to the people who know all tits and bits of technology.
> 
> To be honest I believe we have done all kind of testing we can think of. But
> does it mean that we are never going to have problems? I don't think so.
> There is not such thing called 100% just like there is no such thing called
> unlimited.
> Example yesterday I called my Wife cell phone (from Verizon to Sprint) 5
> times and she did not get a single ring. Her phone was showing 4 bars of
> signal. Now these are level 1 carriers.
> 
> The idea is how many 9s you can support. Based on reliability/availability
> of service in last 6 months I would put myself on 3 9s.(99.9%). Again
> Remember we offer FREE trial before you buy.
> 
> -Jai
> 
> 
> 
> On Thu, Aug 14, 2008 at 12:26 PM, Joe Antkowiak <jantkowiak at netigent.net>wrote:
> 
>> Have to agree here...  There are a few key concepts that I think you're
>> missing.
>>  They're often overlooked...but they hurt.  Once you say "unlimited"
>> (defined
>> otherwise or not), there are many other limits of the technology and
>> service
>> you'll have to be fully aware of and plan for.
>>
>> Ex:  your server was sleeping at 2500 channels -- but what happens when you
>> have
>> 500 channels connecting/terminating every second or two?  and does that
>> kind of
>> usage fit into your definition of unlimited?
>>
>> Just be careful =)
>>
>>
>> Trixter aka Bret McDanel wrote:
>>> On Thu, 2008-08-14 at 11:05 -0700, Jai Rangi wrote:
>>>> Trixter,
>>>> Thank you for your comments,
>>>> We are not dealing with PSTN on our side, we are true VoIP.
>>> Then what are the DIDs?  If they are PSTN callable then there is a pstn
>>> link somewhere, and that link will have a finite amount of channels it
>>> can support and generally it will require the telco to upgrade, and they
>>> may not want to for whatever reason - or may not want to in a timely
>>> fashion.  This can cause them to limit you in aggregate, which
>>> ultimately that limit will be passed to your customers, although no
>>> single customer may notice if its sufficiently high.
>>>
>>>
>>>> Re: Bandwidth, we have upto 100mb. Yes we WILL NOT be doing any media
>>>> on our network which is real bandwidth killer.  Re: cpu and and other
>>>> limits we have built our system on horizontal scalable architecture,
>>>> fully redundant and load balanced system, that includes firewall, SIP
>>>> router, Asterisk servers, Database servers etc.
>>>>
>>> Ok, 100Mbps should be enough for just SIP, but then again under my
>>> example the provider would have to have enough *extra* capacity for the
>>> 1Gbps of media (assuming "worst case" G.711) that would be generated.
>>> Keep in mind that you are adding to their current load by doing this,
>>> and if they dont expand, or dont expand quickly enough, odds are they
>>> are going to have to limit the channels for that reason.
>>>
>>> Additionally you are taking 1/3 of a media gateway P (you can only do
>>> about 32k media streams with RTP per IP since it requires "every other"
>>> port, with RTCP one off, port numbers are a 16 bit integer blah blah
>>> blah).  I do not know if they have that much spare RTP capacity either,
>>> so again limits can come from that.
>>>
>>>
>>>> During our crash test, my server was sleeping until 2500 channels. So
>>>> I am not really worried upto 5000 channels and from there I can easily
>>>> expand my capacity. Our target is to do the expansion as soon as we
>>>> reach the 40-50% utilization of the resources. For companies who has
>>>> more that 200 channels on each DID I think it will be worth for them
>>>> to deal directly with Lavel3, XO, Quest or Verizon directly.
>>>>
>>> Except that they can get the service from you for $8-11 and it would not
>>> be so cheap from those companies directly.  As a result if you really do
>>> offer no limits, no redefining words in your user agreements, and all
>>> that, this would provide them with a much cheaper alternative.  Sure it
>>> gets you customers, but it can be problematic in the end.
>>>
>>>
>>>> Yes, I agree that every unlimited has a limit in terms of capacity and
>>>> resources and we are not exception. But I am positive that we can be
>>>> good resource for small to mid size businesses.
>>> That may be, just be warned that the limits that can be placed may not
>>> come from you, but rather your carriers, or somewhere else in between
>>> you and the pstn.  Those are limits you really cant control easily, but
>>> they still affect your ability to market as unlimited.
>>>
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> 
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