NOTICE: Retry your call if you see "Internal Server Error" message

When trying to place a call, some users may see the message "Internal Server Error" with no call getting established. This is not a critical issue, as subsequent call attempts work around the error situation, but we recognize that this is an inconvenience and we’re investigating cause and fixes, and will roll out fixes as soon as they become available.

In the meantime, if you experience this situation, simply retry your call.