IOS H323 debug H.225.0 IE

aalejo · ‎02-01-2004

Any IOS H.323 debug to see H.225 Informational Elements (IE)?

mjae · ‎02-01-2004

Hi there,

if I understand you correctly, there is this ability to see the IEs. Use the "debug h225 asn1" or h225 debug q931" or "debug h245 asn1" commands to see what it is sending/receiving.

HTHs,

Matthew.

aalejo · ‎02-01-2004

Matthew.

If you use those debugs (debug h225 asn1,debug h245 asn1) you only see asn1 part of the H225 message (aka USER to User IE), you can not see not asn1 IE part for example display name, Calling Party Number, etc.

Alex

mjae · ‎02-01-2004

ok,

the non user-to-user information is encoded in a Q.931 format, so

(a) (possibly) use "debug isdn q931 detail"

(b) get Ethereal or something similar and grab the IP packets on the wire. You can then use Ethereal to decode them, or decode them yourself.

cheers,

Matthew.

aalejo · ‎02-02-2004

Matthew

There is no ISDN line ("debug isdn q931" does no apply) . I will have to use CCM debugs or Sniffer.

Thanks

Alex

mjae · ‎02-02-2004

Alex,

have you used Ethereal? I'm not sure if CCM debugs or Sniffer will decode everything for you. Its freely downloadable and runs on Windows, HPUX, SUN Sollaris, Linux:

http://www.ethereal.com/download.html#binaries

cheers,

Matthew.

aalejo · ‎02-02-2004

Hi Matthew

I used ethereal many times (also surveyor, and sniffer pro) and all off then provide Voip tools and H323, DCCP,MGCP decoding. CCM does privide tools to find IE on calls (just today i use it).

Best Regards,

Alex