Polycom SIP 2.2.0 ユーザーズマニュアル

Administrator’s Guide SoundPoint IP / SoundStation IP 

C - 14

In the DHCP menu of the Main setup menu, set VLAN Discovery to 

“Fixed” or “Custom”.
When set to “Fixed”, the phone will examine DHCP options 128,144, 157 

and 191 (in that order) for a valid DVD string.
When set to "Custom", the value set in "VLAN ID Option" will be 

examined for a valid DVD string.
DVD string in the DHCP option must meet the following conditions to be 

valid:
— Must start with ?VLAN-A=? (case-sensitive)
— Must contain at least one valid ID
— VLAN IDs range from 0 to 4095
— Each VLAN ID must be separated by a ?+? character
— The string must be terminated by a ?;?  
— All characters after the ?;? will be ignored
— There must be no white space before the ?;?

37

n/a

n/a

n/a

Transfer

Transfer

n/a

38

n/a

n/a

n/a

Headset

Headset

n/a

39

n/a

n/a

n/a

MicMute

Handsfree

n/a

40

n/a

n/a

n/a

Handsfree

Hold

n/a

41

n/a

n/a

n/a

n/a

Line4

n/a

42

n/a

n/a

n/a

n/a

Line5

n/a

The SoundPoint IP 550 has only the top four lines keys. Key IDs 31 and 42 are not 
used on the SoundPoint IP 550 platform.