CCIE certification in Voice indicates expert level knowledge of VoIP solutions in the enterprise. Candidates should be able to install, configure and maintain Voice solutions over IP networks. The CCIE Voice track, however, does not certify an understanding of the infrastructure over which VoIP solutions are implemented. This contrasts with the CCIE Service Provider-IP Telephony track which certifies an individual as a core IP expert with a high degree of VoIP literacy.