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This article describes the steps necessary to configure the
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Use Case Scenario
A typical use case scenario for the Multiple IP Interface support is:
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The cleanest solution is to configure a single SIP Signaling Group for each network. The SIP SG pointing towards the ISP network should refer to LAN-2 interface. LAN-2 should be placed in ROUTED mode with an IP address in the 10.51.100.89/24 range. The SIP SG pointing to the Enterprise network should use the Application-IP interface, which is the default.
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SBC Configuration
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LAN Port 2/Ethernet 2 IP
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Transformation Table
There are 4 different transformations used in this exerciseCreate four different transformation tables (for details, refer to Managing Transformation Tables):
- Translation table for OCS (1xxx) extensions
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- Translation table for LAN-1 (2xxx) extensions
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- Translation table for LAN-2 (5xxx) extensions
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- Translation table for PSTN (3xxx) extensions
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Call Routing Tables
There are 3 Create three different Call Routing Table entries used in this exercise(for details, refer to Managing Call Routing Tables):
- Routing Calls from
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- OCS Endpoints
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- Routing Calls from Multiple IP Endpoints (LAN-1 and LAN-2 endpoints)
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- Routing Calls
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- from PSTN Endpoints
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Signaling Groups
Create four different Signaling Groups
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(for details, refer to Managing Signaling Groups):
- Signaling Groups for OCS
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- Signaling Groups for LAN-1 endpoints
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- Signaling Groups for LAN-
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- 2 endpoints
Signaling
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Group for PSTN endpoints
The LAN-2
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This signaling group Signaling Group refers to the IP subnet used between SBC and the SIP trunking provider. There are two subcases here.
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If there is no NAT device between SBC and the SIP-trunking peer, then NAT Traversal must be set to NONE as shown below:
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Signaling Group for PSTN endpoints
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| 1 | Signaling Group for PSTN Endpoints |
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Additional Configuration step for
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Adding Static IP Routes
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The previous steps complete the necessary configuration requirements for implementing the Multiple IP feature on the
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add a Static IP Route to complete the Multiple IP feature support on the
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All end-points located in a private or public network must be reachable through a next-hop gateway, as driven by the network environment.
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Overview
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