Application Guide
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DP750/DP720 Administration Guide 
Version 1.0.3.37 
Ring Tones 
System Ring 
Cadence 
Sets ring cadences for all incoming calls.  
Syntax: c=on1/off1-on2/off2-on3/off3;) Default is set to c=2000/4000; (US standards) 
on1 is the period of ringing ("On time" in "ms") while off1 is the period of silence. Up 
to three cadences are supported. 
Call Progress 
Tones 
Configures tone frequencies according to user preference. By default, the tones are 
set to North American frequencies. Frequencies should be configured  with known 
values to avoid uncomfortable high pitch sounds. ON is the period of  ringing ("On 
time" in "ms") while OFF is the period of silence. In order to set a continuous ring, 
OFF should be zero. Otherwise it will ring ON ms and a pause of OFF ms and then 
repeats the pattern. 
• “Dial tone” 
• “Ring back tone” 
• “Busy tone” 
• “Call-Waiting tone” 
Please refer to the document below to determine your local call progress tones: 
http://www.itu.int/ITU-T/inr/forms/files/tones-0203.pdf 
System Features 
Disable Direct IP 
Call 
Deactivates Direct IP-to-IP calling function. Default is No.   
Maintenance Page Definitions 
Table 13: Maintenance Page Definitions 
Firmware Upgrade   
Firmware Upgrade 
and Provisioning 
Selects  how firmware  upgrade  request  will be  sent: “Always  Check for  New 
Firmware”, “Check New Firmware only when F/W pre/suffix changes”, or “Always 
Skip the Firmware Check”. 
HTTP/HTTPS User 
Name 
Enters user name to authenticate with HTTP/HTTPS server. 
HTTP/HTTPS 
Password 
Enters password to authenticate with HTTP/HTTPS server. 










