There are several additional attacks possible against IP phones. These are covered next .
Unplugging/plugging the combined RJ-45 Ethernet/power cable from the back of the Avaya 4602 phone provokes its boot cycle. During boot, a prompt appears temporarily to permit a user to enter the IP phone's setup by pressing the * key. There is no password required to change the IP phone's settings. These settings vary as a function of the IP phone's application load. According to Avaya's website, 2.3 is the latest release of the Avaya 4602 IP phone.
This behavior is controlled by the customizable system parameters PROCSTAT and PROCPSWD settings. PROCSTAT controls whether local (dialpad) administrative options can be accessed (0 means all administrative options are allowed; 1 means only viewing is allowed). PROCPSWD can restrict administration to a required password.