Cisco VoIP: Troubleshooting IP Phone Registration

Posted on Updated on


1) Check DHCP configuration (option 150)
2) Check flash for firmware
3) Check tftp server command for files required

4)  Commands:
          debug ephone register
          debug ip dhcp server events
          debug ip dhcp
          show ephone-dn summary
          debug ephone keepalive
          debug ephone state
5) Ping ip address of the phone
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