53403: Server is unable to apply a remote media descriptionERROR: 53403error-53403 page anchorPROGRAMMABLE VOICEERROR Error - 53403error---53403 page anchor Server is unable to apply a remote media descriptionserver-is-unable-to-apply-a-remote-media-description page anchorRaised whenever the Server receives a remote media description but is unable to apply it.