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Call stablishment Messages

Where can I find information about the messages exchanged during the call stablishment between the IP phone, Call Manager and MGCP gateway (with E1 to PSTN and E1 QSIG to PBX)?

I need it to understand the messages obtained with the CM "Trace Analysis" tool.

Thanks

1 REPLY
Cisco Employee

Re: Call stablishment Messages

Hi

In regards to MGCP you can have a look at

http://www.cisco.com/en/US/products/sw/voicesw/ps556/products_tech_note09186a0080174804.shtml

And in regards to traces on the callmanager these are also good examples

http://www.cisco.com/en/US/products/sw/voicesw/ps556/products_tech_note09186a0080129d92.shtml#callflowtrace5

Kind Regards

Ullie

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