Version 6.2  199  February 2011 
SIP User's Manual   3. Web-Based Management 
 
  Compares P-Asserted/From URL to the registered AOR 
If the database search is unsuccessful, then the classification process proceeds with 
locating a Proxy Set (associated with the SIP dialog request’s IP address) and then finding 
a match with a corresponding IP Group in the 'IP Group' table. Each IP Group can be 
classified according to its Proxy Set if in the 'IP Group' table the parameter 
ClassifyByProxySet is enabled (see ''Configuring IP Groups'' on page 119). If enable
d, the 
device classifies requests arriving from the IP Group’s Proxy Set as coming from this IP 
Group. The classification is done according to the Proxy IP list (in case of host names, then 
according to the dynamically resolved IP address list). Note that this classification is not 
relevant in cases where multiple IP Groups use the same Proxy Set. 
If classification based on Proxy Set is unsuccessful, the device proceeds to the 
'Classification' table, which searches for a source IP Group based on the following 
matching rules: source SRD, source IP address, source username/host prefix, and 
destination username/host prefix. 
If the above classification process fails to determine the source IP Group to which the 
incoming packet belongs, the call can either be rejected, or allowed and processed (by 
assigning it to the default IP Group of the default SRD) if the parameter 
AllowUnclassifiedCalls is enabled. 
This IP Group is afterwards used for the following purposes:  
  Input for the manipulation and routing processes 
  Defining SIP behavior and IP Profile, Media Realm and matching account 
   
 
Notes:  
•  For a specific classification rule to be effective, the incoming SIP dialog 
message must match the characteristics configured for that rule. 
•  Incoming REGISTER messages are recorded in the device’s database 
and sent to a destination only if they are associated with a source IP 
Group that is of USER type. 
•  The 'Classification' table can also be configured using the ini file table 
parameter Classification (see ''SBC Parameters'' on page 858). 
¾  To configure classification rules: 
1.  Open the 'Classification Table' page (Configuration  tab > VoIP  menu > SBC 
submenu > Routing SBC submenu > Classification Table). 
Figure  3-106: Classification Table Page 
 
2.  Add an entry and then configure it according to the table below. 
3.  Click the Apply button to save your changes. 
4.  To save the changes to flash memory, see ''Saving Configuration'' on page 336.