Polycom 1725-11530-310 User Manual

Administrator’s Guide SoundPoint IP / SoundStation IP 

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AC power adapter or can be line-powered (power supplied through the 

signaling or idle pairs of the LAN Ethernet cable). Line powering typically 

requires that the phone plugs directly into a dedicated LAN jack. Devices that 

do not require LAN power can then plug into the SoundPoint IP PC Ethernet 

port. To disabled the PC Ethernet port, refer to 

 on 

To help ensure good voice quality, the Ethernet switch embedded in the 

SoundPoint IP phones should be configured to give voice traffic emanating 

from the phone higher transmit priority than those from a device connected to 

the PC port. If not using a VLAN (VLAN set to blank in the setup menu), this 

will automatically be the case. If using a VLAN, ensure that the 802.1p 

priorities for both default and real-time transport protocol (RTP) packet types 

are set to 2 or greater. Otherwise, these packets will compete equally with 

those from the PC port. For more information, refer to 

.

You can set up a picture or design to be displayed on the background of the 

graphic display of all SoundPoint IP 550, 560, 650, and 670 phones. There are a 

number of default backgrounds, both solid color and pictures. Both BMP and 

JPEG files are supported. You can also select the label color for soft key and 

line key labels. Users can select which background and label color appears on 

their phone.
You can modify the supported solid color and pictures backgrounds. For 

example, you can add a grey solid color background or modify a picture to one 

of your choice.

Modify the sip.cfg configuration file as follows:

Open sip.cfg in an XML editor.

Locate the background parameter. 

When installing a background of your choice, care needs to be taken to ensure that 
the background does not adversely affect the visibility of the text on the phone 
display. As a general rule, backgrounds should be light in shading for better 
usability.