Hello Machtus!
I have the same problem. On ELU26 I have CISCO 800 router,Primary ISDN towards Telecom. Outgoing data calls are working OK, but incoming data calls fail. When I connect ISDN telephone - voice calls are working OK. Software is BC11 SP10.
Signal trace on SLP60 says that "message type is not compatible with call state". I have reported a bug to technical support of Ericsson, and I am waiting for an answer.....As soon as I receive an answer, I will let you know.
Machtus, please give me a printout of your ROCAP, RODAP,RODDP,NUTRP,ITDAP,RONDP.Maybe I could find something..
If someone from Ericsson is reading this and wants more information, my bug request to Ericsson received official Request ID number 136302.
Best Regards
Radoje
I have solved the problem when old CISCO 800 was replaced with CISCO 2600. Seems that CISCO 800 does not use full ISDN protocol, so it was confused by some extra information.
Machtus, what is your data equipment?
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