decoding D channel frames/formats

[kfarrington]

Good morning all :)

Has anyone ever done this, and how can you do it?

I would like to see Q.921 (LAPD) and Q.931 frames/formats and look at the addressing to the SP.

Many thx indeed.

Ken

[mark-obrien]

Ken,

You can get debug outputs of Q.921 and Q.931 with the commands "debug isdn q921" and "debug isdn q931". I hope that's what you're looking for.

Good luck,

Mark

[kfarrington]

Many thx Mark, but I am looking at decoding the LAPD protocol if this is possible? ie, with the full packet addressing of the L2 ISDN addressing structure.

maybe this is a non starter?

if so, pls tell me im a fool..

all i get is the PPP stuff on the B channel?

love to all - and thx for responding mate!!!!