Version 7.2
417
Mediant 500 MSBR
User's Manual
23. Coders and Profiles
Parameter
Description
[IpProfile_SBCSDPHandleRTCP
Attribute]
that port is not the next higher port number following the RTP
port specified in the media line ('m=').
The parameter is useful for SIP entities that either require the
attribute or do not support the attribute. For example, Google
Chrome and Web RTC do not accept calls without the RTCP
attribute in the SDP. In Web RTC, Chrome (SDES) generates
the SDP with 'a=rtcp', for example:
m=audio 49170 RTP/AVP 0
a=rtcp:53020 IN IP6
2001:2345:6789:ABCD:EF01:2345:6789:ABCD
[0] Don't Care = (Default) The device forwards the SDP as is
without interfering in the RTCP attribute (regardless if present
or not).
[1] Add = The device adds the 'a=rtcp' attribute to the
outgoing SDP offer sent to the SIP entity if the attribute was
not present in the original incoming SDP offer.
[2] Remove = The device removes the 'a=rtcp' attribute, if
present in the incoming SDP offer received from the other
SIP entity, before sending the outgoing SDP offer to the SIP
entity.
Note:
As the RTCP attribute has been defined by the WebRTC
standard as mandatory, the support is important for deployments
implementing WebRTC. For more information on WebRTC, see
WebRTC.
RTCP Mux
sbc-rtcp-mux
[IPProfile_SBCRTCPMux]
Enables interworking of multiplexing of RTP and RTCP onto a
single local port, between SIP entities. The parameter enables
multiplexing of RTP and RTCP traffic onto a single local port, for
the SIP entity associated with the IP Profile.
Multiplexing of RTP data packets and RTCP packets onto a
single local UDP port is done for each RTP session (according to
RFC 5761). If multiplexing is not enabled, the device uses
different (but adjacent) ports for RTP and RTCP packets.
With the increased use of NAT and firewalls, maintaining multiple
NAT bindings can be costly and also complicate firewall
administration since multiple ports must be opened to allow RTP
traffic. To reduce these costs and session setup times, support
for multiplexing RTP data packets and RTCP packets onto a
single port is advantageous.
For multiplexing, the initial SDP offer must include the "a=rtcp-
mux" attribute to request multiplexing of RTP and RTCP onto a
single port. If the SDP answer wishes to multiplex RTP and
RTCP, it must also include the "a=rtcp-mux" attribute. If the
answer does not include the attribute, the offerer must not
multiplex RTP and RTCP packets. If both ICE and multiplexed
RTP-RTCP are used, the initial SDP offer must also include the
"a=candidate:" attribute for both RTP and RTCP along with the
"a=rtcp:" attribute, indicating a fallback port for RTCP in case the
answerer does not support RTP and RTCP multiplexing.
[0] Not Supported = (Default) RTP and RTCP packets use
different ports.
[1] Supported = Device multiplexes RTP and RTCP packets
onto a single port.
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 ...