Mitel 6800i Series Release Notes page 50

Mitel 6800i Series SIP Phones 4.0.0 SP1 Release Notes
Enabling Support for DHCP Option 120
Use the following parameter to enable support for DHCP Option 120 on the SIP phones:
PARAMETER
use dhcp option 120
DESCRIPTION
FORMAT
DEFAULT VALUE
RANGE
EXAMPLE
46
CONFIGURATION FILES
startup.cfg, <model>.cfg, <mac>.cfg
Enables support for DHCP Option 120 on the SIP phones. DHCP Option
120 allows SIP clients to locate a local SIP server (i.e. outbound proxy
server) that can be used for all outbound SIP requests.
Boolean
0 (Disabled)
0 - 1
0 (Disabled)
1 (Enabled)
use dhcp option 120: 1