How do I erase the Configuration (Network, Device, Security etc) on Cisco IP phones 79xx?
A. Complete these steps: • On the Cisco IP Phone, press the Settings button. • Press **#. • When the window displays Settings Unlocked, click the More softkey. • You now see the Erase softkey, which can be used in order to erase the configuration on the Cisco IP Phone. Q. The Cisco IP phone is unable to register to a Cisco CallManager subscriber server and registers with the publisher server, even though the option 150 on the DHCP server has the subscriber server as the first option. How do I troubleshoot this issue? A. In order to resolve this issue complete these steps: • On the Cisco CallManager server, open the CCMAdmin page, and choose Device > Phone. Verify which Device Pool is assigned to the device. • Choose System > Device Pool and look for that device pool. Once you are on the Device Pool page, confirm which Cisco Unified Call Manager Group the device pool uses. • Choose System > Cisco Unified CallManager Group and locate that Cisco Unified CallManager Group. Once you are on
