User's Manual
638
Document #: LTRT-10375
Mediant 500 MSBR
The device uses different local ports (e.g., for RTP, RTCP and fax) for each leg (inbound
and outbound). The local ports are allocated from the Media Realm associated with each
leg. The Media Realm assigned to the leg's IP Group (in the IP Groups table) is used. If not
assigned to the IP Group, the Media Realm assigned to the leg's SIP Interface (in the SIP
Interfaces table) is used. The following figure provides an example of SDP handling for a
call between a LAN IP Phone 10.2.2.6 and a remote IP Phone 212.179.1.13 on the WAN.
Figure
32-3: SDP Offer/Answer Example
32.5.2 Direct Media
You can configure the device to allow the media (RTP/SRTP) session to flow directly
between the SIP endpoints, without traversing the device. This is referred to as No Media
Anchoring (also known as Anti-Tromboning or Direct Media). SIP signaling continues to
traverse the device, with minimal intermediation and involvement, to enable certain SBC
capabilities such as routing. By default, the device employs media anchoring, whereby the
media session traverses the device, as described in Media Anchoring on page 637.
Direct media offers the following benefits:
Saves network bandwidth
Reduces the device's CPU usage (as there is no media handling)
Avoids interference in SDP negotiation and header manipulation on RTP/SRTP
Summary of Contents for Mediant 500 MSBR
Page 2: ......
Page 33: ...Part I Getting Started with Initial Connectivity ...
Page 34: ......
Page 36: ...User s Manual 36 Document LTRT 10375 Mediant 500 MSBR This page is intentionally left blank ...
Page 40: ...User s Manual 40 Document LTRT 10375 Mediant 500 MSBR This page is intentionally left blank ...
Page 45: ...Part II Management Tools ...
Page 46: ......
Page 48: ...User s Manual 48 Document LTRT 10375 Mediant 500 MSBR This page is intentionally left blank ...
Page 115: ...Part III General System Settings ...
Page 116: ......
Page 132: ...User s Manual 132 Document LTRT 10375 Mediant 500 MSBR This page is intentionally left blank ...
Page 137: ...Part IV General VoIP Configuration ...
Page 138: ......
Page 290: ...User s Manual 290 Document LTRT 10375 Mediant 500 MSBR This page is intentionally left blank ...
Page 306: ...User s Manual 306 Document LTRT 10375 Mediant 500 MSBR This page is intentionally left blank ...
Page 380: ...User s Manual 380 Document LTRT 10375 Mediant 500 MSBR This page is intentionally left blank ...
Page 454: ...User s Manual 454 Document LTRT 10375 Mediant 500 MSBR This page is intentionallty left blank ...
Page 455: ...Part V Gateway Application ...
Page 456: ......
Page 460: ...User s Manual 460 Document LTRT 10375 Mediant 500 MSBR This page is intentionally left blank ...
Page 484: ...User s Manual 484 Document LTRT 10375 Mediant 500 MSBR This page is intentionally left blank ...
Page 494: ...User s Manual 494 Document LTRT 10375 Mediant 500 MSBR This page is intentionally left blank ...
Page 625: ...Part VI Session Border Controller Application ...
Page 626: ......
Page 654: ...User s Manual 654 Document LTRT 10375 Mediant 500 MSBR This page is intentionally left blank ...
Page 656: ...User s Manual 656 Document LTRT 10375 Mediant 500 MSBR This page is intentionally left blank ...
Page 741: ...Part VII Cloud Resilience Package ...
Page 742: ......
Page 751: ...Part VIII Data Router Configuration ...
Page 752: ......
Page 753: ......
Page 754: ......
Page 756: ...User s Manual 756 Document LTRT 10375 Mediant 500 MSBR This page is intentionally left blank ...
Page 757: ...Part IX Maintenance ...
Page 758: ......
Page 834: ...User s Manual 834 Document LTRT 10375 Mediant 500 MSBR This page is intetnionaly left blank ...
Page 837: ...Part X Status Performance Monitoring and Reporting ...
Page 838: ......
Page 848: ...User s Manual 848 Document LTRT 10375 Mediant 500 MSBR This page is intentionally left blank ...
Page 852: ...User s Manual 852 Document LTRT 10375 Mediant 500 MSBR This page is intentionally left blank ...
Page 854: ...User s Manual 854 Document LTRT 10375 Mediant 500 MSBR This page is intentionally left blank ...
Page 878: ...User s Manual 878 Document LTRT 10375 Mediant 500 MSBR This page is intentionally left blank ...
Page 880: ...User s Manual 880 Document LTRT 10375 Mediant 500 MSBR This page is intentionally left blank ...
Page 926: ...User s Manual 926 Document LTRT 10375 Mediant 500 MSBR This page is intentionally left blank ...
Page 927: ...Part XI Diagnostics ...
Page 928: ......
Page 950: ...User s Manual 950 Document LTRT 10375 Mediant 500 MSBR This page is intentionally left blank ...
Page 954: ...User s Manual 954 Document LTRT 10375 Mediant 500 MSBR This page is intentionally left blank ...
Page 956: ...User s Manual 956 Document LTRT 10375 Mediant 500 MSBR This page is intentionally left blank ...
Page 958: ...User s Manual 958 Document LTRT 10375 Mediant 500 MSBR This page is intentionally left blank ...
Page 974: ...User s Manual 974 Document LTRT 10375 Mediant 500 MSBR This page is intentionally left blank ...
Page 976: ...User s Manual 976 Document LTRT 10375 Mediant 500 MSBR This page is intentionally left blank ...
Page 977: ...Part XII Appendix ...
Page 978: ......
Page 982: ...User s Manual 982 Document LTRT 10375 Mediant 500 MSBR This page is intentionally left blank ...