09-09-2006 11:22 PM - edited 03-03-2019 01:57 PM
Does one physical bri interface have many B channels inside? Is "bri0" interface referring to a physical cable? How is the ISDN interface/cable look like? Is it just like a regular serial interface? What about D-channel? Where is it? Is D-channel also inside on physical cable along with B channels? B and D channels are logical or physical channel?
09-10-2006 07:47 AM
one ISDN bri means you have 2B+1D channel for the communication... here all the channels are logical...
and yes all channels are multiplex with single physical interface...
you can have more detail from following link:http://www.auditmypc.com/acronym/BRI.asp
rate this post if it helps
regards
Devang
09-10-2006 07:57 AM
Hello,
in addition to Devang's post, ISDN uses a straight cable, just like the ones you use for your Ethernet connections. The B and D channels are part of the 48 bit frame that ISDN sends at layer 1. Have a look at the link below for a better understanding of what B and D channels actually mean:
ISDN Specifications
http://www.cisco.com/univercd/cc/td/doc/cisintwk/ito_doc/isdn.htm#wp1020578
Regards,
GNT
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