Cisco CP-7937G Administration Guide - Page 16
What Networking Protocols Are Used - unified ip conference station
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What Networking Protocols Are Used? Chapter 1 An Overview of the Conference Station What Networking Protocols Are Used? The conference station supports several industry-standard and Cisco networking protocols required for voice communication. Table 1-1 provides an overview of the networking protocols that the conference station supports. Table 1-1 Supported Networking Protocols on the Conference Station Networking Protocol Cisco Discovery Protocol (CDP) Dynamic Host Configuration Protocol (DHCP) Hypertext Transfer Protocol (HTTP) Internet Protocol (IP) Real-Time Transport Protocol (RTP) Skinny Client Control Protocol (SCCP) Purpose Usage Notes CDP is a device-discovery protocol that runs on all Cisco-manufactured equipment. Using CDP, a device can advertise its existence to other devices and receive information about other devices in the network. The conference station uses CDP to communicate information such as auxiliary VLAN ID, per port power management details, and Quality of Service (QoS) configuration information with the Cisco Catalyst switch. DHCP dynamically allocates and assigns an IP address to network devices. DHCP is enabled by default. If disabled, you must manually configure the IP address, subnet mask, gateway, and a TFTP server on each conference station locally. DHCP enables you to connect a conference station into the network and have the conference station become operational without you needing to manually assign an IP address or to configure additional network parameters. Cisco recommends that you use DHCP custom option 150. With this method, you configure the TFTP server IP address as the option value. For additional information about DCHP configurations, refer to the "Cisco TFTP" chapter in Cisco Unified Communications Manager System Guide. HTTP is the standard way of transferring information and moving documents across the Internet and the web. The conference stations uses HTTP for the XML services and for troubleshooting purposes. IP is a messaging protocol that addresses and sends packets across the network. To communicate using IP, network devices must have an assigned IP address, subnet, and gateway. IP addresses, subnets, and gateways identifications are automatically assigned if you are using the conference station with DHCP. If you are not using DHCP, you must manually assign these properties to each conference station locally. RTP is a standard protocol for transporting real-time data, such as interactive voice and video, over data networks. The conference station uses the RTP protocol to send/ receive real-time voice traffic from other conference stations and gateways. SCCP includes a messaging set that allows communications between call control servers and endpoint clients like IP conference stations. SCCP is proprietary to Cisco Systems. The conference station uses SCCP for call control. Cisco Unified IP Conference Station 7937G Administration Guide for Cisco Unified Communications Manager 6.0 1-4 OL-11560-01 Rev. B0