Symptom: Ata 190 Unable To Obtain Ip Address; Ata 190 Resets Unexpectedly - Cisco ATA 190 Administration Manual

ATA 190 Resets Unexpectedly

Power cycle the phone.
Step 4
When you remove a phone from the Cisco Unified Communications Manager database, its configuration
Note
file is deleted from the Cisco Unified Communications Manager TFTP server. The phone's directory
number or numbers remain in the Cisco Unified Communications Manager database. They are called
"unassigned DNs" and can be used for other devices. If unassigned DNs are not used by other devices,
delete them from the Cisco Unified Communications Manager database. You can use the Route Plan
Report to view and delete unassigned reference numbers. See the Cisco Unified Communications
Manager Administration Guide for more information.
Changing the buttons on a phone button template, or assigning a different phone button template to a
Note
phone, may result in directory numbers that are no longer accessible from the phone. The directory
numbers are still assigned to the phone in the Cisco Unified Communications Manager database, but
there is no button on the phone with which calls can be answered. These directory numbers should be
removed from the phone and deleted if necessary.
Registering the Phone with Cisco Unified Communications Manager
A phone can register with a Cisco Unified Communications Manager server only if the phone has been
added to the server or if autoregistration is enabled. Review the information and procedures in the
"Attach a Phone to the ATA 190" section on page 3-3
Cisco Unified Communications Manager database.
To verify that the phone is in the Cisco Unified Communications Manager database, choose Device >
Phone > Find from Cisco Unified Communications Manager Administration to search for the phone
based on its MAC address. For information about determining a MAC address, see the
MAC Address of an ATA 190" section on page
If the phone is already in the Cisco Unified Communications Manager database, its configuration file
may be damaged. See the
page 4-6

Symptom: ATA 190 Unable to Obtain IP Address

If a phone is unable to obtain an IP address when it starts up, the phone may be not be on the same
network or VLAN as the DHCP server, or the switch port to which the phone is connected may be
disabled.
Enure that the network or VLAN to which the phone is connected has access to the DHCP server, and
make sure that the switch port is enabled.
ATA 190 Resets Unexpectedly
If users report that their phones are resetting during calls or while idle on their desk, investigate the
cause. If the network connection and Cisco Unified Communications Manager connection are stable, an
ATA 190 should not reset on its own.
Cisco ATA 190 Analog Telephone Adapter Administration Guide for SIP (Version 1.1)
D-4
"Adding Users to Cisco Unified Communications Manager" section on
for assistance.
Appendix D
to ensure that the phone has been added to the
2-6.
Troubleshooting and Maintenance
"Determining the
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