User's Manual
Firmware Version 1.0.0.5 
UCM6510 IP PBX User Manual 
Page 89 of 192 
timeout, the device is considered offline. The default setting is 1000ms. 
Qualify Frequency 
When "Enable Qualify" option is set to "Yes", configure the interval (in 
seconds) of the SIP OPTIONS message sent to the device to check if 
the device is still online. The default setting is 60 seconds. 
Fax Detection 
Enable to detect Fax signal from the trunk during the call and send the 
received Fax to the default Email address in Fax setting page under web 
GUI->PBX->Internal Options->Fax/T.38. 
Note: 
If enabled, Fax Pass-through cannot be used. 
DIRECT OUTWARD DIALING (DOD) VIA VOIP TRUNKS 
The UCM6510 provides Direct Outward Dialing (DOD) which is a service of a local phone company (or 
local exchange carrier) that allows subscribers within a company's PBX system to connect to outside lines 
directly. 
Example of how DOD is used: 
Company ABC has a SIP trunk. This SIP trunk has 4 DIDs associated to it. The main number of the office 
is routed to an auto attendant. The other three numbers are direct lines to specific users of the company.   
At the moment when a user makes an outbound call their caller ID shows up as the main office number.   
This  poses  a  problem  as  the  CEO  would  like  their  calls  to  come  from  their  direct  line.  This  can  be 
accomplished by configuring DOD for the CEO’s extension. 
Steps on how to configure DOD on the UCM: 
1.  To setup DOD go to UCM6510 web GUI->PBX->Basic/Call Routes->VoIP Trunks page. 
2.  Click   to access the DOD options for the selected SIP Trunk.   
3.  Click "Create a new DOD" to begin your DOD setup 
4.  For "DOD Number" enter one of the numbers(DIDs) from your SIP trunk provider. In the example above 
Company ABC received 4 DIDs from their provider. ABC will enter in the number for the CEO's direct 
line. 
5.  Select an extension from the "Available Extensions" list. Users have the option of selecting more than 
one  extension.  In  this  case,  Company  ABC  would  select  the  CEO's  extension.  After  making  the 
selection, click on the button to move the extension(s) to the "Selected Extensions" list.     










