You have the option of voice encrypting (SRTP) your telephone calls. You can activate this function for your customer account via the Administration portal at any time.
1. Activate the function in the Administration portal.
2. Restart all telephones.
Keep in mind that restarting may take a few minutes. During a conversation, a lock icon on the telephone display indicates that the encryption is activated.
⇒ The active call is now encrypted.