VoiceXML browser services for Cisco Unified Customer Voice Portal (CVP) are delivered on Cisco IOS Voice Gateways. Cisco IOS Voice Gateways combine many voice and data services on a single platform, minimize WAN bandwidth and quality-of-service (QoS) considerations, provide a broad range of port densities and deliver superior media treatment capabilities. The Cisco IOS Voice Gateways include Cisco 2800, 3800 Integrated Services Router and AS5350XM, AS5400XM and AS5400HPX Universal Gateways.