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?
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:
We are pleased to announce availability of Beta software for 16.6.3.
16.6.3 will be the second rebuild on the 16.6 release train targeted
towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are
looking for early feedback from customers befor...
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