The message queuing server process on both servers processing outbound call traffic routing requests failed, which in turn resulted in a high level of errors with the dialplan endpoint.

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This, in turn, caused the load balancer for this endpoint to mark both servers as out of service. Although this should not have affected any inbound calls, these servers also handle post-call CDR processing for both inbound and outbound calls, which would have caused an increase in load on inbound call SBCs and some delays or possible call failures.