I am having the Cisco 7941/7961 IP Phones.I have converted these phones from SCCP version to SIP version using Cisco Call Manager. I want to use these phones with Avaya SIP Server. I am able to change the Network settings using **# combination but I am not able to change the SIP Parameters of these phones. In Cisco 7940/7960 IP Phones there is option to unlock the SIP settings but I can't see the option in 7941/7961. Is there any procedure or document to configure these settings?
Thanks in advance.