Connection Problems; No Association To Wireless Access Points; Access Point Settings Mismatch - Cisco 8821 Administration Manual

Connection Problems

If, after you attempt these solutions, the phone still does not start up, contact a Cisco technical support
representative for additional assistance.

Connection Problems

If the phones experience connection problems that are not related to roaming, the problems are often related
to the Access Point or to the way the phone connects to the Cisco Unified Communications Manager.

No Association to Wireless Access Points

After power on, if a phone continues to cycle through messages displaying on the phone screen, the phone is
not associating with the access point properly. The phone cannot successfully start up unless it associates and
authenticates with an access point.
The wireless phone must first authenticate and associate with an access point before it can obtain an IP address.
The phone follows this start up process with the access point:
1 Scans for an access point
2 Associates with an access point
3 Authenticates using a preconfigured authentication method (using the configured security mode setting)
4 Obtains an IP address

Access Point Settings Mismatch

Problem
A configuration mismatch exists between the phone and the AP.
Solution
• Check the SSID settings on the access point and on the phone to be sure the SSIDs match.
• Check the authentication type settings on the access point and on the phone to be sure authentication
• If using static WEP, check the WEP key on the phone to be sure it matches the WEP key on the access
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and encryption settings match.
If the No Service - IP Config Failed message displays, DHCP failed because
Note
the encryption between the access point and phone do not match.
point. Reenter the WEP key on the phone to be sure it is correct.
If open authentication is set, the phone is able to associate to an access point even if the
Note
WEP keys are incorrect or mismatched.
Troubleshooting