A customer is implementing a SIP-based Avaya AuraTM Contact Center The customer currently has Avaya Aura ME (Midsize Enterprise) system installed (Formerly known as MBT-Midsize Business Template)…

A customer is implementing a SIP-based Avaya AuraTM Contact Center The customer currently has Avaya Aura ME (Midsize Enterprise) system installed (Formerly known as MBT-Midsize Business Template). Which protocol is used to transfer messages between the Avaya Aura ME AES (Application Enable Service) component and the Contact Center Manager Server (CCMS) component?