Our systems have detected unusual traffic from your computer network. This page checks to see if it's really you sending the requests and not a robot.
This page appears when Google automatically detects requests coming from your computer network which appear to be in violation of the
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Learn moreSometimes, you may be asked to solve the CAPTCHA if you are using advanced terms that robots are known to use or sending requests very quickly.
URL: https://google-support.mirrorblogs.com/voice/thread/161203973/ios-15-4-users-experiencing-issues-calling-phone-numbers-with-post-dial-extension?hl=en-GB