Polycom SIP 3.0.2 ユーザーズマニュアル

Administrator’s Guide SoundPoint IP / SoundStation IP 

3 - 8

Boot Server (continued)

1=Custom

The phone will look for the option number specified by the Boot 
Server Option

 parameter (below), and the type specified by 

the Boot Server Option Type parameter (below) in the 

response received from the DHCP server. 
If the DHCP server sends nothing, the following scenarios are 

possible: 
•

If a boot server value is stored in flash memory and the 

value is not “0.0.0.0”, then the value stored in flash is used.

Otherwise the phone sends out a DHCP INFORM query.

- If a single alternate DHCP server responds, this is 

functionally equivalent to the scenario where the primary 

DHCP server responds with a valid boot server value.

- If no alternate DHCP server responds, the INFORM query 

process will retry and eventually time out.

2=Static

The phone will use the boot server configured through the 

Server Menu. For more information, refer to the following 

.

3=Custom+Option 

66

The phone will first use the custom option if present or use 

Option 66 if the custom option is not present. 
If the DHCP server sends nothing, the following scenarios are 

possible: 
•

If a boot server value is stored in flash memory and the 

value is not “0.0.0.0”, then the value stored in flash is used.

Otherwise the phone sends out a DHCP INFORM query.

- If a single alternate DHCP server responds, this is 

functionally equivalent to the scenario where the primary 

DHCP server responds with a valid boot server value. The 

phone prefers the custom option value over the Option 66 

value, but if no custom option is given, the phone will use 

the Option 66 value.

- If no alternate DHCP server responds, the INFORM query 

process will retry and eventually time out.

Boot Server Option

128 through 254 

(Cannot be the 

same as VLAN ID 

Option)

When the boot server parameter is set to Custom, this 

parameter specifies the DHCP option number in which the 

phone will look for its boot server.

Boot Server Option Type

0=IP Address, 

1=String

When the Boot Server parameter is set to Custom, this 

parameter specifies the type of the DHCP option in which the 

phone will look for its boot server. The IP Address must specify 

the boot server. The String must match one of the formats 

described for Server Address in the following section,