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Client Initialization
To initialize, the SCCP client needs to know the
IP address of the CallManager, its own IP address, and other information
about the IP gateway and DNS servers. Initialization takes place on
the local LAN. The client sends a Dynamic Host Control Protocol (DHCP)
request to get an IP address, the DNS server address, and the TFTP
server name and address. The client needs the TFTP server name to
download the configuration file called sepmacaddr.cnf. If the TFTP name is not given, the client uses the default
filename in the IP phone. The client then downloads the .cnf (xml)
configuration file from TFTP server. CNF files contain the IP address
or addresses of the primary and secondary Cisco CallManager. With
this information, the client contacts the CallManager to register.
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