Authorization code for VPIM AMIS Message Networking on your BCM 50 system Message networking on the CallPilot links your voicemail system with other voicemail systems at different locations By using Digital Networking and AMIS, CallPilot subscribers are able to exchange messages with subscribers at other locations Digital Networking transfers messages via internet or intranet connection using Voice Profile for Internet Mail (VPIM) to support interconnection to equipment for Nortel and other vendors. Audio Message Interchange Specification (AMIS) supports an analog transfer protocol that does not require any formal data networking arrangements