TANDBERG D13639 Benutzerhandbuch

TANDBERG MPS API 

User Guide 

 

30 

 

 
In addition to the root commands described above, XACLI support a set of root commands that 
only applies to the Telnet session or RS232 session from where they are issued. This lets the 
user/control application individually configure the session(s) in use. 
 
Supported special commands: 

•

        

xfeedback (not supported on all platforms) 

•

        

xpreferences 

The special command xfeedback lets the user register user defined XPath expressions (with 
possible exposure options) to monitor changes in the XML/XACLI data. Whenever there is a 
change in one or more elements addressed by a registered XPath expression, the part of the 
element structure containing these changes will be returned. The system supports a total of 20 
registered expressions, with a total of 15 expressions for one session. 
 
xfeedback ? 
 
usage: xfeedback register <XPathExpression> 
or:    xfeedback deregister <index> 
or:    xfeedback list 
- 
(note: deregistration with index=0 will deregister all registered 
expressions) 
 
OK 
 
 
Example 2.20  
          
User wants to monitor changes in audio protocols for all active calls: 
xfeedback register status/call/channels/audio/protocol 
 
To view registered expressions: 
xfeedback list 
 
*xf 1 status/call/channels/audio/protocol 
OK 
 
The call changes audio protocol from G722 to G728 on incoming audio channel on call 1: 
*s Call 1 (status=Synced, type=Vtlph, protocol=H323, 
direction=Outgoing): 
     Channels 1 (type=Incoming): 
       Audio (status=Active): 
         Protocol: G728 
*s/end 
 
When changing back to G722: 
*s Call 1 (status=Synced, type=Vtlph, protocol=H323, 
direction=Outgoing): 
     Channels 1 (type=Incoming): 
       Audio (status=Active): 
         Protocol: G722 
*s/end