User's Manual
282
Document #: LTRT-89729
Mediant 3000
sent by the clients of the User-type IP Group. If communication with the Serving IP Group
(e.g., IP-PBX) fails, the User-type IP Group enters into Survivability mode in which the
device uses its database for routing calls between the clients of the User-type IP Group.
The RTP packets between the clients traverse through the device. When the Serving IP
Group is available again, the device returns to normal mode, sending INVITE and
REGISTER messages to the Serving IP Group.
Figure
20-3: IP-to-IP Routing for IP-PBX Remote Users in Survivability Mode (Example)
20.1.3 Inbound and Outbound IP Routing Rules
The device's IP-to-IP call routing is performed using the following two routing rule stages:
1.
Inbound IP Routing Mapping Rule:
Identifies the received call as an IP-to-IP call
based on various characteristics such as the call's source IP address, and assigns it to
an IP Group.
2.
Outbound IP Routing Mapping Rule:
Determines the destination (i.e., IP address) to
where the incoming call associated with a specific source IP Group is finally routed.
The destination address is typically denoted by another IP Group (destination IP
Group) and therefore, the call is sent to the IP address that is defined by the Proxy Set
associated with this IP Group. If the destination is a User-type IP Group, the device
searches for a match between the request-URI of the received INVITE to an AOR
registration record in the device's database. If a match is found, the INVITE is sent to
the IP address of the registered contact.
Summary of Contents for Mediant 3000
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Page 27: ...Part I Getting Started with Initial Connectivity...
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Page 41: ...Part II Management Tools...
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Page 103: ...Part III General System Settings...
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Page 113: ...Part IV General VoIP Configuration...
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Page 275: ...Part V Gateway and IP to IP Application...
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Page 399: ...Part VI Session Border Controller Application...
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Page 465: ...Part VII Stand Alone Survivability Application...
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Page 497: ...Part VIII IP Media Capabilities...
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Page 501: ...Part IX High Availability System...
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Page 515: ...Part X Maintenance...
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Page 565: ...Part XI Status Performance Monitoring and Reporting...
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Page 609: ...Part XII Diagnostics...
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Page 639: ...Part XIII Appendix...
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Page 871: ...Version 6 6 871 Mediant 3000 User s Manual 55 Selected Technical Specifications Reader s Notes...