[Asterisk-Dev] ZAP Channel Maxout.

[Gregory Junker]

Well then why the impossibly small hardware budget?

Greg

Christopher Dobbs wrote:
> 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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>>>>
>>>>
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