We are migrating the Call Manager 3.3 (5) to CUCM 7.1 and we have this problem : 3000 ip phones with static ip address. Some 7905, some 7910 and others 7906. NOw we need to change to DHCP without to act manually on every telephone. For 7905 we know how to do but we are in trouble with 7906. Farther we did a lot of test, after reading about config file/xml configuration. We also had a look to TFTP logs for understanding how to an IPPhone receive configuration files. We watched that every new ip phone (not 7905) search in the TFTP path for a .tlv file, then for a .cnf.xml file, and at least he search .cnf.xml file in the CallManager cache. I think that we need to bring over the phone a configuration file that set DHCP at phone restart. But we can’t.
Can someone help us?