Cisco offers a wide variety of connectivity, expansion and upgrade modules to accommodate the range of application needs in customer networks. The network modules assure customers that they can choose a connectivity solution that fits their requirements. As modular components, they are easily and inexpensively field upgradeable as customer requirements change.Cisco offers AS5300 Voice Bundles, providing all-in-one solution designed for specific customer needs. This bundle includes 120 Voice channels and Quad E1+ card with serial interfaces.