We have an issue with the voice mail button on our Cisco Voip phones dialing for two rings before the voice mail picks up (All models 7945, 7965, 7975) . Is this a known issue in CUCM or Unity Version 8.5? or is this a symptom of a bigger issue?
I wouldn't say this is a known issue by any means. We are currently on 9.1 for CUCM and Unity Connection, but previously were on 8.5. I don't recall this at all with any of our phones. I would check your configuration in CUCM (Advanced Features>Voice Mail; ensure css and pt also) as well as Unity if you haven't already.
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