Maintain control-plane stability for your wireless environment with Cisco 24x7x4 support for the 5520 Wireless Controller. Designed for infrastructure teams that cannot afford extended outages, this service provides around-the-clock access to Cisco support with a four-hour response objective, helping accelerate diagnosis and recovery when controller issues affect mobility services. For enterprise WLANs, the value is not just coverage hours. It is the ability to keep a critical controller platform under active support so your team can move quickly when failures occur, reduce time spent isolating faults, and preserve service continuity across offices, campuses, and distributed sites. This support offering is well suited to environments where wireless access is tied directly to productivity, guest access, voice, and operational systems. Choose this service when the controller is central to your network design and downtime carries real cost. It helps justify the investment in a Cisco platform by pairing the hardware with a support model aligned to business-critical operations.