Scenario for campus intrasture problem:
Phones are not registering. Phones are obtaining a valid IP address and have
been erased to ensure they are getting a fresh IP address.
Solutions investigated
Verified VLAN's are correct and active
Verified option 150 is correct in the DHCP options
Verified Helper IP address is on was the voice vlan's when in different subnet
TFTP and DHCP on CM was restarted.
NTP was verified and CM DB replication is normal.
Idea that not checkd: WAN Qos may have been enabled thereby causing phone
registration issues.
Am I on the right track?
Michael Davis
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