Customer called and let me know that they are getting a message on their phones of a certificate expiring. The message does not indicate which certificate is expiring, and there is no error in system status about it. I've confirmed all the certificates are up to date, and cannot see one that expired on January 15th of this year. The message on the phone says "Certificate Warning", gives the date of expiration, and the subject and issuer are the Avaya Ip office.