The 5E switch type supports the following options to route an international call:
Set the international flag bit, strip the 011 digits, and send only the country code and the called telephone number.
Set the number type to National or Unknown and send the 011 digits along with the country code and the called telephone number.
When these settings are not set properly on Cisco CallManager, the international calls may not get routed properly.
If the 011 digits are stripped as per your dial plan, then set the "Calling party IE number type unknown" setting to International. If the 011 digits are not stripped and sent to the Telco switch, then set it to either Unknownor National.
How are you connecting to the PSTN to make international calls? are you using the ISDN or copper? what type of Voice gateway are you using? are you using H323 or MGCP?
Have you tried to debug this error the moment that it happens?
I had a similar error with a CAS -T1 connection using mgcp but the calls were disconnected after 3 minutes or 180 seconds, after debbuging the connection we realized that we were not getting an acknowledgement back from telco telling us that the call was connected succesfully to the other party(offhook)so our system was releasing the call (disconnecting the call) in this case the CAS-T1 was not well provisioned by telco.
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The short answer is that you don't.... That isn't entirely true while at
the same time it kind of is, but for the most part you don't configure
the softkeys. You enable or disable them via TCL. Here is the long
answer. Be sure to read the whole thing or e...
Topology: IP Phone > Switches > Microsoft NPS setup to forward 802.1x
proxy to > ISE 2.1 patch 3 Authentication: EAP-TLS using Cisco MIC SANs
Phone Models 802.1X support? 802.1x flavor Addtl Comment EAP-MD5 EAP-TLS
Cisco 3905 Y Y N Cisco 6911 Y Y N Cisco ...