I am sending call from a Nextone SBC to an AS5400. The AS5400 is routing the call but not putting any CDN into the ISDN setup message even though the incoming invite has the TO header populated with the number
I compared a good call to a bad and what I did notice is that the bad calls TO header looks like this coming into the 5400
A good call looks like this
Could the 5400 have a problem with the double format ? Has anybody seen this before ?
Here is the trace from the 5400 and you notice the CDN field is not populated in the outgoing ISDN setup.
nothing shows up on the degub ccsip error or debug isdn q931 error
The thing is this TO header format is being sent out to a SIP peering provider of mine and they are not having an issue with it. Only the 5400. It does not populate a CDN parameter in the ISDN setup message to my PSTN switch
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