Version 7.2  709  Mediant 800B Gateway & E-SBC 
 
User's Manual   34. Routing SBC 
1.  In the Classification table, add the following classification rules: 
Index 
Source Username 
Prefix 
Destination 
Username Prefix 
Destination Host  Source IP Group 
0  333  -  -  1 
1  1111  2000  10.10.10.10  2 
 
2.  In the IP Groups table, add the following IP Groups: 
Index  Source URI Input  Destination URI Input 
1  -  - 
2  P-Called-Party-ID  Route 
 
In the example, a match exists only for Classification Rule #1. This is because the source 
(1111) and destination (2000) username prefixes match those in the INVITE's P-Called-
Party-ID header (i..e., "<sip:1111@10.33.38.1>") and Route header (i.e., 
"<sip:2000@10.10.10.10.10>"), respectively. These SIP headers were determined in IP 
Group 2. 
 
 
34.2  Configuring SBC IP-to-IP Routing 
The IP-to-IP Routing table lets you configure up to 615 SBC IP-to-IP routing rules.  
Configuration of IP-to-IP routing rules includes two areas: 
  Match: Defines the characteristics of the incoming SIP dialog message (e.g., IP 
Group from which the message is received). 
  Action: Defines the action that is done if the incoming call matches the characteristics 
of the rule (i.e., routes the call to the specified destination). 
The device searches the table from top to bottom  for the first  rule that matches the 
characteristics of the incoming call. If it finds a matching rule, it sends the call to the 
destination configured for that rule. If it doesn't find a matching rule, it rejects the call.  
 
 
Note: Configure stricter rules higher up in the table than less strict rules to ensure the 
desired rule is used to route the call. Strict 
refers to the number of matching 
characteristics configured for the rule. For example, a rule configured with source host 
name and source IP Group as matching characteristics is stricter than a rule 
configured with only source host name. If the rule configured with only source host 
name appears higher up in the table, the device ("erroneously") uses the rule to route 
calls matching this source host name (even if they also match the rule appearing 
lower down in the table configured with the source IP Group as well). 
 
You can route incoming SIP dialog messages (e.g., INVITE) to any of the following IP 
destinations:  
  According to registered user Contact listed in the device's registration database (only 
for User-type IP Groups). 
  IP Group - the destination is the address configured for the Proxy Set associated with 
the IP Group. 
  IP Group Set - the destination can be based on multiple IP Groups for load balancing,