SIP IP Phone Models 480i, 480i CT, 9112i, 9133i Release Notes
New Features in 1.4.1
Auto-discovery Using mDNS
Release 1.4.1 introduces a process that allows the phones to auto-discover all servers on a network using mDNS. When the IP phone discovers a TFTP server, it is automatically configured by that TFTP server.
An unconfigured phone (phone right out of the box) added to a network, attempts to auto-discover a configuration server on the network without any end-user intervention. When it receives DHCP option 66 (TFTP server), it automatically gets configured by the TFTP server.
An already configured phone (either previously configured by auto-discovery or manually configured) added to a network, uses its predefined configuration to boot up.
Notes:
1. Configuration parameters received via DHCP do not constitute configuration information, with the exception of a TFTP server. Therefore, you can plug a phone into a DHCP environment, still use the auto-discovery process, and still allow the use of the TFTP server parameter to set the configuration server.
2.DHCP option 66 (TFTP server details) overrides the mDNS phase of the auto-discovery. Therefore, the DHCP option takes priority and the remaining process of auto-discovery continues.
3.As the phone performs auto-discovery, all servers in the network (including the TFTP server), display in the phone window. However, only the server configured for TFTP automatically configures the phone.
