Troubleshooting guide

Hardware
69
DHCP discovery OR
DHCP OFFER X REJ
DHCP option 43 or 125 on 3300
Release 7.0 or later systems or
option 130 (MITEL IP PHONE)
for earlier Releases is not
programmed.
Identify the location of DHCP server and set to
Option 130 as String type with value of “MITEL
IP PHONE”.
DHCP server does not have
enough IP addresses.
Create a larger scope with more IP addresses
on the DHCP server.
DHCP server cannot assign IP
addresses for the corresponding
subnet, even though there are
enough IP addresses.
1. For a Microsoft DHCP server, reboot the
server.
2. For the controller internal DHCP server,
disable DHCP and rebuild the scope.
L2 switch port is shut down or not
configured properly.
1. Check the L2 switch, and ensure that the
port is not shut down.
2. Ensure that this port can access the DHCP
server subnet (that is, access the port for the
same VLAN, etc.).
Your installation is using the
controller’s internal DHCP
server, but DBMS Save is not on.
Enter the DBMS Save command through the
Maintenance Commands form.
Table 18: IP Phone Registration Troubleshooting
Error Message on
Display
Possible Cause Corrective Action
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