[asterisk-biz] Re: [asterisk-dev] TDMoE Multi-Span Frame - An extension to TDMoE

[Joseph Benden]

Vazir,

Not at the moment. It currently combines everything destine to the same 
MAC address on to a single frame (which could overflow 1500 bytes.)  You 
may have multiple MAC address destinations with multiple sub-addresses 
in zaptel.conf: ie 4 MAC addresses with 7 spans each equaling 28 T1s.

It could be extended to split up the frame destine to the same MAC 
address onto multiple Ethernet frames based on the sub-address, such that:

V = Configured Span Number
Actual Ethernet Frame # = (V >> 3)
Actual Sub-Address = (V mod 7)

This would then allow more than 7 T1 spans to the same MAC address, by 
using multiple Ethernet frames.

Thanks,
-Joe
Thralling Penguin LLC


Vazir wrote:
> Joseph,
>
> Does your driver splits the load over different frames if 
> over 7 spans have to be used, but we do not want to use a 
> single frame in the size over 1500b, in other word, is 
> there a way of limiting the ethernet frame size?
>
> On 11 May 2007 17:56, Joseph Benden wrote:
>   
>> Hello,
>>
>> I have developed an extension protocol for TDMoE to allow
>> multiple TDM spans to be coalesced in to a single frame
>> that is sent and received on the physical network layer.
>> This new process was designed to increase the efficiency
>> of TDMoE allowing for high-density telephony
>> applications.
>>
>> More information is available here:
>>
>> http://www.thrallingpenguin.com/articles/tdmoe-mf.htm
>>
>> Thanks,
>> -Joseph Benden
>> Thralling Penguin LLC
>>
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