When SAS receives a SIP INVITE request from a proxy server, the following routing logic
is performed:
a. Sends the request according to rules configured in the IP-to-IP Routing table.
b. If no matching routing rule exists, the device sends the request according to its SAS
registration database.
c. If no routing rule is located in the database, the device sends the request according to
the Request-URI header.
Note: The IP-to-IP Routing table can also be configured using the table ini file
parameter, IP2IPRouting (see 'Configuration Parameters Reference' on page
461).
 To configure the IP-to-IP Routing table for SAS:
1. In the SAS Configuration page, click the SAS Routing Table button; the IP-to-IP
Routing Table page appears.
2. Click Add; the Add Record dialog box appears:
Figure 27-9: Add Record Dialog Box of SAS IP2IP Routing Page
3. Configure the rule according to the table below.
4. Click Submit to apply your changes.
5. To save the changes to flash memory, see 'Saving Configuration' on page 324.
Note: The following parameters are not applicable to SAS and must be ignored:
• 'Source IP Group ID'
• 'Destination IP Group ID'
• 'Destination SRD ID'
• 'Alternative Route Options'
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