204 No suitable providers found

 SYSTEM ERROR. CODE 204. No providers found to terminate call to. None providers in routing table can accept and complete this call. 
There can be several reasons why.  
User can have empty routing table e.g. users' LCR does not have providers. Also these providers could not have rates for dialed destination. 
To find exact cause for this problem please use Call Tracing. Call Tracing is best tool to troubleshoot this problem. 
For more info consult online manual at wiki.kolmisoft.com

That means something is wrong with LCR or providers:

• required provider isn't added to dialing users LCR
• provider does not have rates to destination
• all Providers' rates are higher then users' rates and Allow loss calls is not enabled for users

Check Call Tracing for specified user for EXACT info.

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See also:

• Hangupcause Codes