Mitel MiVoice Business Troubleshooting Manual page 67

C 3
HAPTER
IP Phone Registration Troubleshooting (Continued) (Sheet 2 of 8)
Table 3.8:
Error Message on
Display
D uplicated IP
address
DHCP discovery
OR
DHCP OFFER X
REJ
Possible Cause
Existing data device
owns the IP
address.
Corrupted DHCP
server.
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.
DHCP server does
not have enough IP
addresses.
DHCP server
cannot assign IP
addresses for the
corresponding
subnet, even
though there are
enough IP
addresses.
L2 switch port is
shut down or not
configured properly.
Your installation is
using the
controller's internal
DHCP server, but
DBMS Save is not
on.
Corrective Action
Check the IP address on the phone display.
1.
Disconnect the IP Phone.
2.
From a PC on the same subnet, ping the
3.
suspected IP Phone. If there is a response,
identify the data device, and resolve the
conflict.
On the suspected DHCP server, disable then
1.
recreate the scope.
If this is a Microsoft DHCP server, reboot the
2.
server.
Identify the location of DHCP server and set to
Option 130 as String type with value of "MITEL IP
PHONE".
Create a larger scope with more IP addresses on
the DHCP server.
For a Microsoft DHCP server, reboot the
1.
server.
For the controller internal DHCP server, disable
2.
DHCP and rebuild the scope.
Check the L2 switch, and ensure that the port is
1.
not shut down.
Ensure that this port can access the DHCP
2.
server subnet (that is, access the port for the
same VLAN, etc.).
Enter the DBMS Save command through the
Maintenance Commands form.
P
HONES
H
ARDWARE
60