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ISDN Q931 Message

mohitgrover89@live.com
Level 1
Level 1

‎07-11-2013 10:53 AM - edited ‎03-16-2019 06:20 PM

Guys, we all know about debug isdn q931 output message, I've 4 doubts in that. (which are in highlighted form in the attached snapshot)

  • What is meaning & use of Channel ID [which is i = 0xA9839F in our case] (Line 30) ?
  • What is pd & what does that mean  (Line 31) ?
  • What does this mean i = 0x0081 (Line 10) (I thing I know about this that this value is in hexadecimal, after that 0081 represent what ?)

        & i = 0x80 (Line 12)

Please check the attached snapshot for your reference.

Thank you in advance.

Thanks: Mohit Grover MCP, MCSE, MCITP CCIE Voice # 35961 BCA (Network Communications) MCA (Network Communications)
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Nishant Savalia
Level 4
Level 4

‎07-12-2013 03:48 AM

Hi Mohit,

Below is the required information:-

1). channel id is composed of Bearer capability and the channel (i.e.