User's Manual
418
Document #: LTRT-89729
Mediant 3000
If after SDP offer\answer negotiation, one SBC leg uses RTP while the other uses SRTP,
then the device performs RTP-SRTP transcoding. To translate between RTP and SRTP,
the following prerequisites must be met:
At least one supported SDP "crypto" attribute.
The EnableMediaSecurity parameter must be set to 1.
Transcoding where both legs are configured for SRTP is typically required to trans-encrypt
and trans-decrypt. This is relevant when the MKI and Symmetric MKI parameters are
enabled. In other words, both sides need to both encrypt and decrypt the outgoing and
incoming SRTP packets, respectively.
28.4.9 Multiple RTP Media Streams per Call Session
The device's SBC application supports multiple RTP media streams per SBC call session.
Up to five different media types can be included in a session:
Audio (m=audio)
Video (m=video)
Text (m=text)
Fax (m=image)
Therefore, the device can provide transcoding of various attributes in the SDP offer/answer
(e.g., codec, port, and packetization time) per media type. If the device is unable to perform
transcoding (for example, does not support the codec), it relays the SBC dialog
transparently.
28.4.10 Interworking DTMF Methods
The device supports interworking between various DTMF methods such as RFC 2833, In-
Band DTMF’s, and SIP INFO (Cisco\Nortel\Korea). By default, the device allows the
remote user agents to negotiate (in case of RFC 2833) and passes DTMF without
intervention. However, if two user agents (UA) support different DTMF methods, the device
can interwork these different DTMF methods at each leg.
This DTMF interworking feature is enabled using IP Profiles (
ini
file parameter IPProfile):
SBCRFC2833Behavior - affects the RFC 2833 SDP offer\answer negotiation:
•
[0]
(default): the device does not intervene in the RFC 2833 negotiation.
•
[1]:
each outgoing offer\answer includes RFC 2833 in the offered SDP (the
device adds RFC 2833 only if the incoming offer does not include RFC 2833).
•
[2]:
the device removes RFC 2833 from the incoming offer.
SBCAlternativeDTMFMethod – the device's first priority for DTMF method at each leg
is RFC 2833. Therefore, if a specific leg negotiates RFC 2833 successfully, then the
chosen DTMF method for this leg is RFC 2833. For legs where RFC 2833 is not
negotiated successfully, the device uses this parameter to determine the DTMF
method for the leg.
•
[0]
(default): the device does not attempt to interwork any special DTMF method
•
[1]:
In Band
•
[2]:
INFO, Cisco
•
[3]:
INFO, Nortel
•
[4]:
INFO, Korea
The chosen DTMF method determines (for each leg) which DTMF method is used for
sending DTMF’s. If the device interworks between different DTMF methods and one of the
methods is In-band\RFC 2833, detection and generation of DTMF methods requires DSP
allocation.
Содержание Mediant 3000
Страница 1: ...User s Manual Version 6 6 Enterprise Session Border Controller VoIP Digital Media Gateway Mediant 3000...
Страница 2: ......
Страница 21: ...Version 6 6 21 Mediant 3000 User s Manual 1 Overview Figure 1 2 Mediant 3000 TP 6310 Functional Block Diagram...
Страница 22: ...User s Manual 22 Document LTRT 89729 Mediant 3000 Figure 1 3 Mediant 3000 TP 8410 Functional Block Diagram...
Страница 26: ...User s Manual 26 Document LTRT 89729 Mediant 3000 Reader s Note...
Страница 27: ...Part I Getting Started with Initial Connectivity...
Страница 28: ......
Страница 40: ...User s Manual 40 Document LTRT 89729 Mediant 3000 Reader s Notes...
Страница 41: ...Part II Management Tools...
Страница 42: ......
Страница 44: ...User s Manual 44 Document LTRT 89729 Mediant 3000 Reader s Notes...
Страница 80: ...User s Manual 80 Document LTRT 89729 Mediant 3000 Reader s Notes...
Страница 98: ...User s Manual 98 Document LTRT 89729 Mediant 3000 Reader s Notes...
Страница 103: ...Part III General System Settings...
Страница 104: ......
Страница 113: ...Part IV General VoIP Configuration...
Страница 114: ......
Страница 144: ...User s Manual 144 Document LTRT 89729 Mediant 3000 Reader s Notes...
Страница 164: ...User s Manual 164 Document LTRT 89729 Mediant 3000 Reader s Notes...
Страница 222: ...User s Manual 222 Document LTRT 89729 Mediant 3000 Reader s Notes...
Страница 224: ...User s Manual 224 Document LTRT 89729 Mediant 3000 Reader s Notes...
Страница 275: ...Part V Gateway and IP to IP Application...
Страница 276: ......
Страница 278: ...User s Manual 278 Document LTRT 89729 Mediant 3000 Reader s Notes...
Страница 399: ...Part VI Session Border Controller Application...
Страница 400: ......
Страница 402: ...User s Manual 402 Document LTRT 89729 Mediant 3000 Reader s Notes...
Страница 464: ...User s Manual 464 Document LTRT 89729 Mediant 3000 Reader s Notes...
Страница 465: ...Part VII Stand Alone Survivability Application...
Страница 466: ......
Страница 474: ...User s Manual 474 Document LTRT 89729 Mediant 3000 Reader s Notes...
Страница 494: ...User s Manual 494 Document LTRT 89729 Mediant 3000 Reader s Notes...
Страница 497: ...Part VIII IP Media Capabilities...
Страница 498: ......
Страница 501: ...Part IX High Availability System...
Страница 502: ......
Страница 515: ...Part X Maintenance...
Страница 516: ......
Страница 522: ...User s Manual 522 Document LTRT 89729 Mediant 3000 Reader s Notes...
Страница 524: ...User s Manual 524 Document LTRT 89729 Mediant 3000 Reader s Notes...
Страница 552: ...User s Manual 552 Document LTRT 89729 Mediant 3000 Reader s Notes...
Страница 562: ...User s Manual 562 Document LTRT 89729 Mediant 3000 Reader s Notes...
Страница 565: ...Part XI Status Performance Monitoring and Reporting...
Страница 566: ......
Страница 578: ...User s Manual 578 Document LTRT 89729 Mediant 3000 Reader s Notes...
Страница 609: ...Part XII Diagnostics...
Страница 610: ......
Страница 624: ...User s Manual 624 Document LTRT 89729 Mediant 3000 Reader s Notes...
Страница 626: ...User s Manual 626 Document LTRT 89729 Mediant 3000 Reader s Notes...
Страница 638: ...User s Manual 638 Document LTRT 89729 Mediant 3000 Reader s Notes...
Страница 639: ...Part XIII Appendix...
Страница 640: ......
Страница 864: ...User s Manual 864 Document LTRT 89729 Mediant 3000 Reader s Notes...
Страница 871: ...Version 6 6 871 Mediant 3000 User s Manual 55 Selected Technical Specifications Reader s Notes...
Страница 872: ...User s Manual Ver 6 6 www audiocodes com...