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Aastra Telecom 41-001343-02 User Manual

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 Operational, Basic, and Advanced Parameters
41-001343-02 REV04 – 05.2014
A-12
DHCP Option Settings
Option 12
Option 77
Option 120
Parameter– 
hostname
Configuration Files
aastra.cfg, <model>.cfg, <mac>.cfg
Description
Specifies the hostname DHCP Option 12 that the phone sends with the DHCP Request 
packet. 
Note:
If you change this parameter, you must restart your phone for the change to take affect.
Format
String
Default Value
[<model><MAC IP Address>]
Range
Up to 64 alpha-numeric characters
Note:
The value for this parameter can also be a fully qualified domain name.
Example
hostname: aastra4
Parameter– 
dhcp userclass
Configuration Files
aastra.cfg, <model>.cfg, <mac>.cfg
Description
Specifies the User Class DHCP Option 77 that the phone sends to the configuration server 
with the DHCP Request packet. 
Note:
If you specify a value for this parameter, you must restart your phone for the change to take 
affect. Any change in its value during start-up results in an automatic reboot.
Format
String
Default Value
““
Range
Up to 64 alpha-numeric characters
Example
dhcp userclass: admin
Parameter – 
use dhcp option 120
Configuration Files
aastra.cfg, <model>.cfg, <mac>.cfg
Description
Enables support for DHCP Option 120 on the IP 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. 
Format
Boolean
Default Value
0 (disabled)
Range
0-1
0 (disabled)
1 (enabled)
Example
use dhcp option 120: 1