Checking Static Ip Address Settings; Verifying Voice Vlan Configuration; Eliminating Dns Or Other Connectivity Errors; Troubleshooting Ata 190 Security - Cisco ATA 190 Administration Manual

Troubleshooting ATA 190 Security

Checking Static IP Address Settings

If the phone has been assigned a static IP address, verify that you have entered the correct settings. See
the

Verifying Voice VLAN Configuration

If the ATA 190 appears to reset during heavy network usage (for example, following extensive web
surfing on a computer connected to same switch as phone), it is likely that you do not have a voice VLAN
configured.
Isolating the phones on a separate auxiliary VLAN increases the quality of the voice traffic.

Eliminating DNS or Other Connectivity Errors

If the phone continues to reset, follow these steps to eliminate DNS or other connectivity errors:
Procedure
Use the IVR to reset phone settings to their default values. See the
Step 1
Your Phone Setting" section on page B-1
Modify DHCP and IP settings:
Step 2
a.
b.
c.
On the Cisco Unified Communications Manager server, verify that the local host files have the correct
Step 3
Cisco Unified Communications Manager server name mapped to the correct IP address.
From Cisco Unified Communications Manager, choose System > Server and verify that the server is
Step 4
referred to by its IP address and not by its DNS name.
From Cisco Unified Communications Manager, choose Device > Phone and verify that you have
Step 5
assigned the correct MAC address to this ATA 190. For information about determining a MAC address,
see the
Power cycle the phone.
Step 6
Troubleshooting ATA 190 Security
Table D-1
information relating to the solutions for any of these issues, and for more troubleshooting information
about security, see the Cisco Unified Communications Manager Security Guide.
Cisco ATA 190 Analog Telephone Adapter Administration Guide for SIP (Version 1.1)
D-6
"Understanding Phone Configuration Files" section on page 2-3
Disable DHCP.
Assign static IP values to the phone. See the
page 2-3 for instructions. Use the same default router setting used for other functioning ATA 190.
Assign TFTP server. Use the same TFTP server used for other functioning ATA 190.
"Determining the MAC Address of an ATA 190" section on page
provides troubleshooting information for the security features on the ATA 190. For
Appendix D
"Accessing the IVR and Configuring
for details.
"Understanding Phone Configuration Files" section on
Troubleshooting and Maintenance
for more information.
2-6.
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