UCM6200 Series User Manual 
If enabled, the SIP INVITE message sent to the trunk will contain PAI (P-Asserted-
Identity) header.   
The PPI header will include the configured DOD for this extension. 
Note: “Send PPI Header” needs to be enabled in order to use this feature. 
If enabled, the SIP INVITE message sent to the trunk will contain PAI (P-Asserted-
Identity) header including configured PAI Header. The default setting is “No”. 
Note: 
“Send PPI Header” and “Send PAI Header” cannot be enabled at the same time. 
Only  one  of  the  two  headers  is  allowed  to  be  contained  in  the  SIP  INVITE 
message. 
If “Send PAI Header” is enabled and “PAI Header” is configured as “123456” for 
instance,  the  PAI  header  in  the  SIP  message  sent  from  the  UCM  will  contain 
“123456”.  If  “Send  PAI  Header”  is  enabled  and  “PAI  Header”  is  configured  as 
“empty”, the PAI header in the SIP message sent from the UCM will contain the 
original CID. 
Note: “Send PAI Header” needs to be enabled in order to use this feature 
Select to enable outbound proxy in this trunk. The default setting is "No". 
When  outbound  proxy  support  is  enabled,  enter  the  IP  address  or  URL  of  the 
outbound proxy. 
It is used to set if the phone system will remove outbound proxy URI from the route 
header. If is set to “Yes”, it will remove the route header from SIP requests. The 
default setting is “No”. 
Configure  where  to  get  the  destination  ID  of  an  incoming  SIP  call,  from  SIP 
Request-line or To-header. The default is set to "Request-line". 
Configure the default DTMF mode when sending DTMF on this trunk. 
•  Default: The global setting of DTMF mode will be used. The global setting 
for DTMF Mode setting is under web UI->PBX->SIP Settings->ToS. 
•  RFC2833: Send DTMF using RFC2833. 
•  Info: Send DTMF using SIP INFO message. 
•  Inband: Send DTMF using inband audio. This requires 64 bit codec, i.e., 
PCMU and PCMA. 
•  Auto:  Send  DTMF  using  RFC2833  if  offered. Otherwise,  inband  will  be 
used. 
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.