Programming instructions

221
Troubleshooting
A 5215 Dual Mode, 5220
Dual Mode, or 5235 IP
Phone fails to boot up.
Set display shows “Port
Access Control – Press
# to Continue”.
802.1X port
authentication
is enabled in
network. IP
phone is not
configured with
a username and
password.
Configure username and
password on IP phone. See
“Configuring an Authentication
Username and Password” on
page 176.
OR
Disable 802.1X support in the
Layer 2 switch. See “Enabling or
Disabling 802.1X Authentication”
on page 178.
A 5215 Dual Mode, 5220
Dual Mode, or 5235 IP
Phone fails to boot up.
Set display shows “Port
Access Failure –
Rebooting”.
802.1X port
authentication
is enabled in
network. IP
phone is not
configured with
correct
username and
password.
Check the username and
password of the IP phone in
database of the RADIUS server.
Configure the correct username
and password in the IP phone.
See “Configuring an
Authentication Username and
Password” on page 176
OR
Erase the username and
password that is stored in the
phone. See “Erasing an
Authentication Username and
Password” on page 178. Reboot
the phone in order to re-enter the
username and password.
802.1X port
authentication
is enabled in
network. PC is
connected to
network through
IP Phone. PC is
not configured
with correct
username and
password.
Check the username and
password of the PC in database of
the RADIUS server. Configure the
correct username and password
on the PC.
OR
Disable 802.1X support in the PC
if enabled.
OR
Ensure RADIUS EAP is
“EAP-MD5”.
Table 28: Phone Connection Problems Troubleshooting (continued)
Symptoms
Probable
Causes
Corrective Action
(Page 5 of 5)