02-16-2008 01:39 AM
Hi All,
Can you please explain the difference between the Q921 and Q931 debugging in Gateway.
Solved! Go to Solution.
02-16-2008 03:17 AM
Q921 is isdn layer 2, an hdlc-family protocol that ensures messages are reliably sent between router and switch.
Q931 is isdn layer 3 and is used to for the actual call messages, o top of layer 2.
Depending on where you suspect the problem is, you enable one or another, sometime both.
02-16-2008 03:17 AM
Q921 is isdn layer 2, an hdlc-family protocol that ensures messages are reliably sent between router and switch.
Q931 is isdn layer 3 and is used to for the actual call messages, o top of layer 2.
Depending on where you suspect the problem is, you enable one or another, sometime both.
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