I have gone to raycom website.

[cactus_studio]

It seems RC7210 is a good chip of Ethenet to 4*E1 bridges. BUt I can't download its datasheet.
But I still have a questions to my_garden and other people:
when I make an ethernet to E1 bridge, do I have to unpack IP packets? My original thoughts is I can only deal with Ethernet frame and leave inside IP packets unchanged. Am I right?
In RC7210, it use 4*E1 to accommodate one Ethernet traffic and it seems this chip does nothing about speed adaption. It just receive MAC frame and process them , and then transmit them . If E1 capacity is overflow , the chip just discard those packets . and the job of rate adaption and error checking is leaving to upper protocols. Am I right?

 

[my_garden]

Hi cactus,
I think if you unpack IP packet, it will work more economic. And in one 10M to one E1, this is very important! Right?
For RC7210, I don't know clear. I will see it.
Glade to discuss with you

 

[cdcll]

It seems RC7210 is a good chip of Ethenet to 4*E1 bridges. BUt I can't download its datasheet.
But I still have a questions to my_garden and other people:
when I make an ethernet to E1 bridge, do I have to unpack IP packets? My original thoughts is I can only deal with Ethernet frame and leave inside IP packets unchanged. Am I right?
In RC7210, it use 4*E1 to accommodate one Ethernet traffic and it seems this chip does nothing about speed adaption. It just receive MAC frame and process them , and then transmit them . If E1 capacity is overflow , the chip just discard those packets . and the job of rate adaption and error checking is leaving to upper protocols. Am I right?

I just got the datasheet of RC7210, but in Chinese.