IMPORTANT
Ribbon recommends using the Transparency Profile to configure transparency on the SBC Core for new deployments, as well as applying additional transparency configurations to existing deployments. Do not use IP Signaling Profile flags in these scenarios because the flags will be retired in upcoming releases.
Refer to the SBC SIP Transparency Implementation Guide for additional information.
Use this object to define the parameters associated with Media features for this SIP trunk group.
Note
The SBC 52x0 and SBC 7000 systems support creating IP Interface Groups containing sets of IP interfaces that are not "processor friendly" (i.e. carried on physical Ethernet ports served by separate processors). However, restrictions exist regarding the usage of such Interface Groups.
(This ability does not apply to the SBC 51x0 and SBC 5400 systems which have only two physical media ports. IP interfaces from the two physical ports may be configured within the same IP Interface Groups without restriction.)
For complete details, refer to Configuring IP Interface Groups and Interfaces.
To View and Edit Media
On the
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main screen, go to Configuration > System Provisioning > Category: Trunk Provisioning > Trunk Group > SIP Trunk Group > Media. The Media window is displayed.Use the drop-down lists to select the desired Address Context, Zone and SIP Trunk Group.
The Edit Media window is displayed.
SIP Trunk Group - Media Edit Window
The following fields are displayed:
Sip Trunk Group - Media parameters
Parameter | Description |
|---|---|
Data Path mode Passthru | Specifies whether the SBC will transmit media direction (Data Path Mode) received from a peer in the Offer SDP RTP IP.
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Direct Media Allowed | If enabled, attempt to set up a direct-media path so that media flows directly between endpoints in the same direct-media group.
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| Dtls Profile Name | Specifies the name of the Dtls Profile to attach to this Trunk Group. To create a Dtls Profile, refer to Security - Dtls Profile. |
Direct Media Allowed Behind Napt | If enabled, the SBC attempts to set up a direct-media call for endpoints behind a NAT.
|
Direct Media Anti Trombone | Enable this flag on trunk groups facing an AS to allow direct media using C-line trigger (e.g. media antitrombone).
Direct Media (Direct Media Allowed flag) must be enabled on trunk groups facing the endpoints for this feature to function. |
Direct Media Group Id | This identifies the direct media group to which this trunk group belongs. The value ranges from 0 to 655535 and the default value is 0. |
Late Media Support | Determines whether a SIP late media (reverse offer) INVITE should be converted to a forward offer on egress or else allowed to transparently pass through.
If you configure Packet Service Profile Packet To Packet Control for “Transcode Free Transparency” (see System Provisioning - Packet Service Profile), ensure you also set Late Media Support to ‘passthru’. When Late Media Support is set to Convert and the Direct Media Allowed flag is enabled for the same call, late media Convert takes precedence for the original egress INVITE being generated. Eventually, the call transitions to a direct media call. Set this flag at the Ingress leg of the Trunk Group. |
| Multiple Audio Stream Support | This option determines whether the SBC processes multiple audio m-lines, or a combination of audio and image m-lines, in SDP. The options are:
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| Disallow Srtp Stream | This flag determines whether the SBC forwards SRTP streams on egress when they are received in incoming SDP, or it sets the port to zero, thus disabling the SRTP stream. Multiple audio m-line support (Multiple Audio Stream Support) must be enabled before you can enable this parameter. The options are:
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Max Ptime Default | This field indicates the default packet size in milliseconds. The value ranges from 10 to 150 and the default value is 150. |
Comedia Connection Role | Indicates whether the SDP offer sent by the SBC includes a direction attribute line as defined by the Comedia draft.
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| Tmr64K | Enable this flag to allow the transmission Medium Requirement Unrestricted 64kbit/s control for SIP-ISUP interworking.
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Media IP Interface Group Name | Name of the IP interface group for media. |
| Media IP Address | Each trunk group can have a media IP address configured to specify a specific IP address to use when allocating UDP or TCP media. If you prefer to choose an IP address from a range of values configured in Media Port Range (UDP) or TCP Port Range, use the default value “0.0.0.0” for the Media IP Address parameter. Media IP Address can be configured as either an IPv4 of IPv6 address (except for H.323 which does not support IPv6 addresses). Any IP address configured must belong to the IP Interface Group configured as the Media IP Interface Group for the trunk group. For additional details, see SIP over UDP and SIP over TCP. Default = 0.0.0.0 |
Source Address Filtering | When enabled, incoming media packets which do not match the expected source IP address and UDP port are filtered out.
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Media Addr Type | The media address type attribute determines the type of IP address the SBC uses in an offer.
The Anat parameter page is only available when the IPv4 and IPv6 option is chosen. The Ice parameter page is available only when the IPv4 and IPv6 option is chosen and the Services NAT Traversal option enables Ice Support. Refer to Services - Nat Traversal |
Recordable | Enable this flag to support media recording of RTP stream to an external recording device on this SIP trunk group.
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Sdp Attribute Selective Relay | Enable this flag to control the selective relay of unknown SDP attributes at the session level and attributes from the core audio stream.
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| Msrp | Enables the MSRP payload relay over TCP connections that will be setup on a successful negotiation of MSRP SDP attributes. The options are:
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| Omr Allowed | The options are:
NOTE: This configuration is not supported on ERE and is intended for use only with an external PSX. |
| Omr Primary Realm | Use this parameter to choose which Address Context realm name to use as the primary realm for this SIP trunk group. NOTE: This configuration is not supported on ERE and is intended for use only with an external PSX. |
| Advertise Audio Only | When enabled SBC sends only the main audio/image stream in the SDP offer. The options are:
|
| Lync Share | This flag supports Lync/Desktop sharing application media streams. The options are:
Refer to Configuring SBC and LYNC in Media Environment for configuration details. |
Make the required changes and click Save at the right hand bottom of the panel to save the changes made.
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