Version 7.2
627
Mediant 500 MSBR
User's Manual
32. SBC Overview
32
SBC Overview
This section provides an overview of the device's SBC application.
Note:
•
For guidelines on how to deploy your SBC device, refer to the
SBC Design Guide
document.
•
The SBC feature is available only if the device is installed with a License Key that
includes this feature. For installing a License Key, see License Key on page 797.
•
For the maximum number of supported SBC sessions, and SBC users than can
be registered in the device's registration database, see Technical Specifications
on page 1245.
32.1 Feature List
The SBC application supports the following main features:
NAT traversal: The device supports NAT traversal, allowing, for example,
communication with ITSPs with globally unique IP addresses and with far-end users
located behind NAT on the WAN. The device supports this by:
•
Continually registering far-end users with its users registration database.
•
Maintaining remote NAT binding state by frequent registrations and thereby, off-
loading far-end registrations from the LAN IP PBX.
•
Using Symmetric RTP (RFC 4961) to overcome bearer NAT traversal.
VoIP firewall and security for signaling and media:
•
SIP signaling:
♦
Deep and stateful inspection of all SIP signaling packets.
♦
SIP dialog initiations may be rejected based on values of incoming SIP
INVITE message and other Layer-3 characteristics.
♦
Packets not belonging to an authorized SIP dialog are discarded.
•
RTP:
♦
Deep packet inspection of all RTP packets.
♦
Late rogue detection - if a SIP session was gracefully terminated and
someone tries to "ride on it" with rogue traffic from the already terminated
RTP and SIP context, the VoIP Firewall prevents this from occurring.
♦
Disconnects call (after user-defined time) if RTP connection is broken.
♦
Black/White lists for both Layer-3 firewall and SIP classification.
Stateful Proxy Operation Mode: The device can act as a Stateful Proxy by enabling
SIP messages to traverse it transparently (with minimal interference) between the
inbound and outbound legs.
B2BUA and Topology Hiding: The device intrinsically supports topology hiding, limiting
the amount of topology information displayed to external parties. For example, IP
addresses of ITSPs' equipment (e.g. proxies, gateways, and application servers) can
be hidden from outside parties. The device's topology hiding is provided by
implementing back-to-back user agent (B2BUA) leg routing:
•
Strips all incoming SIP Via header fields and creates a new Via value for the
outgoing message.
•
Each leg has its own Route/Record Route set.
Содержание Mediant 500 MSBR
Страница 1: ...User s Manual AudioCodes Family of Multi Service Business Routers MSBR Mediant 500 MSBR Version 7 2 ...
Страница 2: ......
Страница 33: ...Part I Getting Started with Initial Connectivity ...
Страница 34: ......
Страница 36: ...User s Manual 36 Document LTRT 10375 Mediant 500 MSBR This page is intentionally left blank ...
Страница 40: ...User s Manual 40 Document LTRT 10375 Mediant 500 MSBR This page is intentionally left blank ...
Страница 45: ...Part II Management Tools ...
Страница 46: ......
Страница 48: ...User s Manual 48 Document LTRT 10375 Mediant 500 MSBR This page is intentionally left blank ...
Страница 115: ...Part III General System Settings ...
Страница 116: ......
Страница 132: ...User s Manual 132 Document LTRT 10375 Mediant 500 MSBR This page is intentionally left blank ...
Страница 137: ...Part IV General VoIP Configuration ...
Страница 138: ......
Страница 290: ...User s Manual 290 Document LTRT 10375 Mediant 500 MSBR This page is intentionally left blank ...
Страница 306: ...User s Manual 306 Document LTRT 10375 Mediant 500 MSBR This page is intentionally left blank ...
Страница 380: ...User s Manual 380 Document LTRT 10375 Mediant 500 MSBR This page is intentionally left blank ...
Страница 454: ...User s Manual 454 Document LTRT 10375 Mediant 500 MSBR This page is intentionallty left blank ...
Страница 455: ...Part V Gateway Application ...
Страница 456: ......
Страница 458: ...User s Manual 458 Document LTRT 10375 Mediant 500 MSBR IP to Tel Call Figure 24 1 IP to Tel Call Processing Flowchart ...
Страница 460: ...User s Manual 460 Document LTRT 10375 Mediant 500 MSBR This page is intentionally left blank ...
Страница 484: ...User s Manual 484 Document LTRT 10375 Mediant 500 MSBR This page is intentionally left blank ...
Страница 494: ...User s Manual 494 Document LTRT 10375 Mediant 500 MSBR This page is intentionally left blank ...
Страница 625: ...Part VI Session Border Controller Application ...
Страница 626: ......
Страница 654: ...User s Manual 654 Document LTRT 10375 Mediant 500 MSBR This page is intentionally left blank ...
Страница 656: ...User s Manual 656 Document LTRT 10375 Mediant 500 MSBR This page is intentionally left blank ...
Страница 741: ...Part VII Cloud Resilience Package ...
Страница 742: ......
Страница 751: ...Part VIII Data Router Configuration ...
Страница 752: ......
Страница 753: ......
Страница 754: ......
Страница 756: ...User s Manual 756 Document LTRT 10375 Mediant 500 MSBR This page is intentionally left blank ...
Страница 757: ...Part IX Maintenance ...
Страница 758: ......
Страница 834: ...User s Manual 834 Document LTRT 10375 Mediant 500 MSBR This page is intetnionaly left blank ...
Страница 837: ...Part X Status Performance Monitoring and Reporting ...
Страница 838: ......
Страница 848: ...User s Manual 848 Document LTRT 10375 Mediant 500 MSBR This page is intentionally left blank ...
Страница 852: ...User s Manual 852 Document LTRT 10375 Mediant 500 MSBR This page is intentionally left blank ...
Страница 854: ...User s Manual 854 Document LTRT 10375 Mediant 500 MSBR This page is intentionally left blank ...
Страница 878: ...User s Manual 878 Document LTRT 10375 Mediant 500 MSBR This page is intentionally left blank ...
Страница 880: ...User s Manual 880 Document LTRT 10375 Mediant 500 MSBR This page is intentionally left blank ...
Страница 926: ...User s Manual 926 Document LTRT 10375 Mediant 500 MSBR This page is intentionally left blank ...
Страница 927: ...Part XI Diagnostics ...
Страница 928: ......
Страница 950: ...User s Manual 950 Document LTRT 10375 Mediant 500 MSBR This page is intentionally left blank ...
Страница 954: ...User s Manual 954 Document LTRT 10375 Mediant 500 MSBR This page is intentionally left blank ...
Страница 956: ...User s Manual 956 Document LTRT 10375 Mediant 500 MSBR This page is intentionally left blank ...
Страница 958: ...User s Manual 958 Document LTRT 10375 Mediant 500 MSBR This page is intentionally left blank ...
Страница 974: ...User s Manual 974 Document LTRT 10375 Mediant 500 MSBR This page is intentionally left blank ...
Страница 976: ...User s Manual 976 Document LTRT 10375 Mediant 500 MSBR This page is intentionally left blank ...
Страница 977: ...Part XII Appendix ...
Страница 978: ......
Страница 982: ...User s Manual 982 Document LTRT 10375 Mediant 500 MSBR This page is intentionally left blank ...