Avaya SA ESS+UA ONS 24X7 SYS C190 3Y

Protect mission-critical Avaya SYS C190 deployments with a three-year onsite support agreement that combines essential service levels and Upgrade Advantage entitlements. This SKU is designed for 24x7 operations where vendor presence, rapid dispatch, and continuous software entitlement matter. Over a 36-month term, you get structured vendor response outside business hours, access to approved firmware and software upgrades, and field service coordination tied to your C190 system. This service justifies a higher spend compared with minimal or remote-only options because it reduces operational risk for always-on environments: faster mean time to repair, vendor accountability for parts and repairs, and ongoing software currency. For enterprise contact centers or core voice platforms that cannot tolerate extended outages, a 24x7 onsite package is the pragmatic choice to protect revenue and customer experience.