Filter
Top Products
Cisco 7920 Error Message − Registration Rejected
This message means that the Cisco CallManager server with which the Cisco 7920 attempted to register does
not have an entry for the phone, and Auto−Registration is not enabled. Refer to Troubleshooting Cisco IP
Phone (7910, 7940, 7960, 12SP, and VIP30) Registration Problems with Cisco CallManager 3.x for further
information.
When the Cisco 7920 has successfully registered with the CallManager server, you have completed this task.
Cisco 7920 Error Message − Connecting to CallManager 0−5
This message means that the Cisco 7920 is not able to contact a CallManager server. The phone will try to
contact Cisco CallManager servers until it successfully contacts a server or until it is turned off.
There are two common causes for this problem: incorrect WEP keys and IP routing problems.
Incorrect WEP Keys
Incorrect WEP keys will cause the Cisco 7920 to send IP packets that are not decrypted properly by the Cisco
Aironet 1200 AP. This problem has the same symptoms as a loss of IP connectivity. Verify that the Cisco
7920 and the Cisco Aironet 1200 AP have the same WEP keys configured.
See Step 15 in Configuring the Cisco 7920 for information on Cisco 7920 Network Security.•
See Step 6 in Configuring the Cisco Aironet 1200 AP for information on Cisco Aironet 1200 AP
Radio Data Encryption.
•
IP Routing Problems
DHCP IP ParametersTroubleshooting DHCP problems is beyond the scope of this document. Refer to
Solving DHCP and TFTP Problems with Windows 2000 and CallManager IP Phones for more information.
As an alternative, you can use static IP parameters to eliminate the DHCP server from the configuration, so
that you can continue to troubleshoot the Cisco 7920s registration process. See the Configuring the Cisco
7920 section of this document to configure a static IP address. Select an IP address from the appropriate
subnet that is not already in use on the network. Turn the Cisco 7920 off and back on again, after you have
configured the static IP address.
Static IP ParametersVerify that the static IP parameters on the Cisco 7920 have been entered correctly.
Choose Menu > Network Config > Current Config to do this on the Cisco 7920 itself. You can also use the
Cisco 7920 Configuration Utility to verify these settings.
Cisco 7920 Configuration Utility Can Not Connect to 7920 − Connection
Busy
If the Cisco 7920 is communicating with another device (for example, it is attempting to register with a
CallManager) and you try to connect to it with the Cisco 7920 Configuration Utility to import or export a
configuration, then you will occasionally encounter this error message. If the Cisco 7920 can successfully
register with the CallManager server, then wait for it to complete the registration process step before you use
the Cisco 7920 Configuration Utility.
If the Cisco 7920 can not register with the CallManager server and it continues to retry the registration process
and you can not access the Cisco 7920 from the Configuration Utility, then you need to stop the Cisco 7920
from being able to authenticate and associate with the Cisco Aironet 1200 AP.