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Admin Guide > CONFIGURATION > Managing ICE Gateway > Adding a SIP PBX > Additional ICE CUCM Configuration > Establishing secure communication between a Cisco IP Phone and CUCM
Establishing secure communication between a Cisco IP Phone and CUCM
Complete the instructions in this section to establish secure communication connections between a Cisco IP Phone and CUCM.
1. Creating a Phone Security Profile
2. Creating a Phone Device using the Phone Security Profile
3. Configuring the Docker Container .env File
Note: The Cisco IP Phone model 8851 is used as an example for the instructions in this section. The process may vary for other phone models.