Hello:I have a Cisco 8851 phone, that is registered to CUCM 10.5 and worked fine for a year. Phone restarted and getting " Device is out of Service" error. Any assistance greatly appreciated.Alex 

Hello:We are planning to replace old Cisco 3560 and 4505 switches. (currently I have a single voice vlan and data vlan).Is it a good idea to create multiple vlans (ex: voice vlan, printers on another vlan, security camera on separate vlan etc)etc?Cur...

Hello:I have a Cisco Unified Call Manager 5.1.2  and a Unity server 5.0.1.When someone calls our main number at after hours, it goes to  ext.3150, then  goes to ext.3151. If nobody answer the call, after 3 rings it forwards to a call center, where th...