Cisco Trivial File Transfer Protocol (TFTP) builds and serves files that are consistent with the trivial file transfer protocol, a simplified version of FTP. Cisco TFTP serves embedded component executable, ringer files, and device configuration files.
Cisco Unified Communications Manager only: A configuration file includes a list of Cisco Unified Communications Managers to which devices (telephones and gateways) make connections. When a device boots, the component queries a Dynamic Host Configuration Protocol (DHCP) server for its network configuration information. The DHCP server responds with an IP address for the device, a subnet mask, a default gateway, a Domain Name System (DNS) server address, and a TFTP server name or address. The device requests a configuration file from the TFTP server. The configuration file contains a list of Cisco Unified Communications Managers and the TCP port through which the device connects to those Cisco Unified Communications Managers. The configuration file contains a list of Cisco Unified Communications Managers and the TCP port through which the device connects to those Cisco Unified Communications Managers.