paul.matthews Thu, 09/27/2007 - 09:11
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Hi Carl, X.21 is really the protocol, with X.24 covering the cabling.


http://www.itu.int/rec/T-REC-X.21/en

http://www.itu.int/rec/T-REC-X.24/en


X.24 is really helpful and says that cable length is limited by the spec of the interchange circuits.


So, to the BT site as a best fuess to who the provider may be - there is no technical info I can find for Megastream, only kilostream (includes Kilostream N), where a max length of 10M is specified.


http://www2.bt.com/static/i/media/pdf/kilostream_network_terminating.pdf


Paul.


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