/mcpReset Phones Make sure that you reset your phones after you complete all your encrypted TFTP configuration file updates. Procedure Step 1 From Cisco Unified CM Administration, choose Device > Phones. Step 2 Click Find. Step 3 Click Select All. Step 4 Click Reset Selected. Disable TFTP Encrypted Configuration Files If digest authentication is True for the phone that is running SIP when the TFTP encrypted configuration setting is False, digest credentials may get sent in the clear. Warning After you update the setting, the encryption keys for the phone remain in the Unified Communications Managerdatabase. Cisco Unified IP Phones 7911G, 7931G (SCCP only), 7941G, 7941G-GE, 7942G, 7945G, 7961G, 7961G-GE, 7962G, 7965G, 7971G, 7971G-GE, and 7975G request an encrypted file (.enc.sgn file) when the encrypted configuration setting gets updated to False, the phone requests an unencrypted, signed file (.sgn file). If Cisco Unified IP Phones are running on SCCP and SIP, request an encrypted file when the encryption configuration setting gets updated to False. Remove the symmetric key from the phone GUI so that the phone requests an unencrypted configuration file the next time that it is reset. • Cisco Unified IP Phones running on SCCP: 6901, 6911, 6921, 6941, 6945, 6961, 7906G, 7911G, 7921G, 7925G, 7925G-EX, 7926G, 7931G, 7941G, 7941G-GE, 7942G, 7945G, 7961G, 7961G-GE, 7962G, 7965G, 7971G, 7971G-GE, 7975G, 8941, 8945. • Cisco Unified IP Phones running on SIP: 6901, 6911, 6921, 6941, 6945, 6961, 7906G, 7911G, 7941G, 7941G-GE, 7942G, 7961G, 7961G-GE,7962G, 7965G, 7970G, 7971G, 7971G-GE, 7975G, 8941, 8945, 8961, 9971, 7811, 78321, 7841, 7861, 7832, 8811, 8841, 8845, 8851, 8851NR, 8861, 8865, 8865NE, 8821, 8831, 8832, 8832NR. Procedure Purpose Command or Action To disable encryption for the phone configuration files, Uncheck TFTP Encrypted Config check box in the phone security profile associated to the phone. Step 1 Security Guide for Cisco Unified Communications Manager, Release 15 and SUs 110 Basic System Security Reset Phones