UCM6200 Series User Manual 
Enter the password to register to the trunk from the provider. 
Select audio and video codec for the VoIP trunk. The available codecs are: PCMU, 
PCMA,  GSM,  AAL2-G.726-32,  G.726,  G.722,  G.729,  G.723,  iLBC,  ADPCM, 
H.264, H.263, H.263p and VP8. 
Enable Heartbeat 
Detection 
If enabled, the UCM6200 will regularly send SIP OPTIONS to the device to check 
if the device is still online. The default setting is "No". 
When "Enable Heartbeat Detection" 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. 
Maximum Number of 
Call Lines 
The maximum number of concurrent calls using the trunk. The default settings 0, 
which means no limited. 
Select Fax mode. The default setting is “None”. 
•  None: Disable Fax. 
•  Fax Detect: Fax signal from the user/trunk during the call can be detected and 
the  received  Fax  will  be  sent  to  the  Email  address  configured  for  this 
extension. If no Email address can be found for the user, the Fax will be sent 
to  the  default  Email address  configured  in  Fax  setting  page  under  web  UI-
>PBX->Internal Options->Fax/T.38. 
 
Table 58: IAX Peer Trunk Configuration Parameters 
Configure  a  unique  label  to  identify  this  trunk  when  listed  in  outbound  rules, 
inbound rules and etc. 
Configure the IP address or URL for the VoIP provider’s server of the trunk. 
If  enabled,  the  trunk  CID  will  not  be  overridden  by  extension's  CID  when  the 
extension has CID configured. The default setting is "No". 
If selected, the trunk will be disabled. 
Configure  the  Caller  ID.  This  is  the  number  that  the  trunk  will  try  to  use  when 
making  outbound  calls.  For  some  providers,  it  might  not be  possible  to set  the 
CallerID with this option and this option will be ignored. 
When  making  outgoing  calls,  the  following  rules  are  used  to  determine  which 
CallerID will be used if they exist: 
•  The CallerID configured for the extension will be looked up first. 
•  If no CallerID configured for the extension, the CallerID configured for the trunk 
will be used. 
•  If the above two are missing, the "Global Outbound CID" defined in Web GUI-
>PBX->Internal Options->General will be used. 
Configure  the  name  of  the  caller  to  be  displayed  when  the  extension  has  no