Keep legacy voice assets in service while you modernize the network. The AudioCodes Mediant 800C with 4 FXS interfaces is designed for organizations that need dependable analog connectivity alongside SIP-based communications. It gives IT teams a practical path to support fax, paging, and analog handsets in branch or distributed environments without disrupting established workflows. This model fits well where uptime, migration control, and endpoint continuity matter more than a simple feature checklist. By bridging analog devices into an IP telephony architecture, it helps reduce replacement costs and avoids unnecessary churn across facilities that still depend on FXS-connected equipment. That makes it a strong fit for environments with mixed voice infrastructure, especially where service continuity is tied to operational processes. For teams planning phased telephony transitions, the Mediant 800C provides a focused hardware foundation for preserving service while standardizing on VoIP. It is the kind of appliance chosen when the cost of downtime, retraining, or wholesale device replacement is higher than the cost of doing the migration in stages.