Cisco 3905 Administration Manual page 87

Remote Monitoring
Message
Checksum Error
DHCP timeout
DNS timeout
DNS unknown host
Duplicate IP
Description
Downloaded software file is
corrupted.
DHCP server did not respond.
DNS server did not respond.
DNS could not resolve the name of
the TFTP server or Cisco Unified
Communications Manager.
Another device is using the IP
address assigned to the phone.
Cisco Unified SIP Phone 3905 Administration Guide for Cisco Unified Communications Manager 8.6 (SIP)
Status Messages
Possible Explanation and Action
Obtain a new copy of the phone firmware and
place it in the TFTPPath directory. You should
only copy files into this directory when the
TFTP server software is shut down, otherwise
the files may be corrupted.
• Network is busy - The errors should
resolve themselves when the network
load reduces.
• No network connectivity between the
DHCP server and the phone - Verify the
network connections.
• DHCP server is down - Check the DHCP
server configuration.
• Errors persist - Consider assigning a
static IP address.
• Network is busy - The errors should
resolve themselves when the network
load reduces.
• No network connectivity between the
DNS server and the phone - Verify the
network connections.
• DNS server is down - Check the DNS
server configuration.
• Verify that the host names of the TFTP
server or Cisco Unified Communications
Manager are configured properly in DNS.
• Consider using IP addresses rather than
host names.
• If the phone has a static IP address, verify
that you have not assigned a duplicate IP
address.
• If you are using DHCP, check the DHCP
server configuration.
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