[Asterisk-Dev] ZAP Channel Maxout.

[Christopher Dobbs]

We are planning on providing POTS termination for a local VoIP provider.
Minimum required number of lines is 4000.  We also have to be able to 
provide "operator" Service.

This is just something that we are planning on doing, I was just asking 
in this list how to overcome what I
had read was a 200 Zap channel limit.

I know that this thread is OT and if someone wishes to converse with me 
more about it, please do it off list.

I will be posting status updates on this project (and probably asking 
for help) on the -users list, where this conversation now belongs.

Thanks to all of you who have helped.  I am gratefully.

--
Christopher Dobbs

Gregory Junker wrote:

> I should clarify, that my experience is with a retail giant's national 
> call center, which handled 40 million calls per year by the time I 
> left, and we had 17 DS3 coming into the building, 7 of which were idle 
> (thank you MCI for your upselling, but I digress), and 2500 
> extensions, about 40% of which were assigned to actual call agents 
> (the others were 384 VRU/IVR lines, and the rest were employee 
> enxtensions), and probably only 60% of those active at any given time 
> (more during Christmas season). For those doing the math, that is just 
> under 1000 extensions active at peak times (read: complete saturation 
> of all live agents plus all 384 VRU extensions), with reasonable 
> estimates of maybe 100 on hold at any given time. That means 1100 
> incoming calls, at peak seasonal usage at the largest retail 
> organization in the country.
>
> So forgive me for believing that your estimate of 4800 lines needed is 
> a bit overoptimistic....
>
> Greg
>
> Gregory Junker wrote:
>
>> Your poor local bus....
>>
>> I guess one of the main questions people are asking, is what makes 
>> you think you need 4800 lines worth of capacity?
>>
>> Greg
>>
>> Christopher Dobbs wrote:
>>
>>> We are planning to use multiple Ethernet cards on the master.
>>> We were thinking three slaves/Ethernet channel.
>>>
>>> -- 
>>> Christopher Dobbs
>>>
>>> Jeffrey C. Ollie wrote:
>>>
>>>> On Mon, 2004-12-13 at 12:42 -0800, Christopher Dobbs wrote:
>>>>  
>>>>
>>>>> Using slave * boxes and TDMoE.
>>>>> Each slave will have 5 4-port T1 Cards (20 T1's/BOX -or- 480
>>>>> lines/box)
>>>>> We will have 10 slaves.
>>>>>
>>>>> For a grand total of 4800 Lines.
>>>>> This method was chosen for administrative ease.
>>>>>   
>>>>
>>>>
>>>>
>>>> You'll need Gig-E in your master server, and maybe even in your slave
>>>> boxes, and a decent ethernet switch too.  4800 DS0s is a little over 7
>>>> DS3s, which amounts to over 300Mbit of traffic (not including ethernet
>>>> headers) if you encode all the DSOs with G.711 uLaw (64Kbit/DSO).
>>>>
>>>> Jeff
>>>>
>>>>  
>>>>
>>>> ------------------------------------------------------------------------ 
>>>>
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