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Transparency_Profile_Note
Transparency_Profile_Note

Use this object the Media window to define the parameters associated with Media media features for this a specified SIP trunk group.

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IP_IGs_ServedBySeperateProcessors
IP_IGs_ServedBySeperateProcessors

To View and Edit Media Parameters

On the

Spacevars
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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.to Configuration > System Provisioning > Category: SIP Carrier Peering > SIP Trunk Group > Media or
Configuration > Category: Trunk Provisioning > Trunk Group > SIP Trunk Group > Media or
All > Address Context > Zone > SIP Trunk Group > Media

The Media window opens. Use the drop-down lists to select the desired Address Context, Zone and SIP Trunk Group. The Edit Media window is options are displayed.

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1SIP Trunk Group - Media Edit Window
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The following fields are displayed:

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1Sip SIP Trunk Group - Media parametersParameters
 


 Disabled  If enabled, the SBC attempts a Direct Media Anti Trombone this an antitrombone (Direct Media Allowed Direct Media Group Id The value ranges from 0 to 655535 and the default value is 0Name of the IP interface group for media.

Note: 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


Note: 
The omrAllowed and directMediaAllowed parameters are mutually exclusive in a Sip Trunk Group. SBC considers OMR as enabled when omrAllowed parameter in the Trunk Group is not set to 'disabled' and a realm name is associated with the Trunk Group, plus useDirectMedia parameter in the Packet Service Profile is enabled. Even if OMR is enabled on one side but not the other, OMR procedures are applied for bypassing any previous nodes, but are prevented from passing the OMR-specific SDP attributes towards the unsupported side.

Note: The PSX flag Send Direct Media Info In SDP in the IP Signaling Profile is used to control sending the OMR attributes to the peer. If OMR is enabled and Send Direct Media Info In SDP is not enabled, SBC still performs all the OMR procedures, but removes the OMR attributes from the SDP before sending the offer/answer.



NOTE: This configuration is not supported on ERE and is intended for use only with an external PSX.

PSX only

Parameter

Description

Advertise Audio Only

When enabled, SBC sends only the main audio/image stream in the SDP offer.

  • Disabled (default)
  • Enabled
App Specific Bandwidth

When enabled on a trunk group, this flag includes the b=AS attribute in the SDP outgoing offer or answer sent on that trunk group.

  • Disabled (default)
  • Enabled

This flag does not insert the b=AS SDP attribute for non-audio streams or at the session level. The b=AS SDP attribute does not apply to the H.323 signaling interface.

Comedia Connection Role

 Indicates whether the SDP offer sent by the SBC includes a direction attribute line as defined by the Comedia draft.
  • Active – The SDP offer will include "a=direction: active" attribute line.
  • None – The SDP offer will not include a direction attribute line.
  • Passive – The SDP offer will include "a=direction: passive" attribute line.

Data Path Mode Passthru

Determines

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.

  • Disabled (default)
  • Enabled
Direct Media Allowed
directMediaAllowed

If enabled, attempt to set up a direct-media path so that media flows directly between endpoints in the same direct-media group.

  • Disabled (default) 
  • Enabled
Dtls Profile NameSpecifies the name of the Dtls Profile to attach to this Trunk Group. To create a Dtls Profile, refer to Security - Dtls Profile.
directMediaAllowedBehindNapt

If enabled, attempt

Direct Media Allowed Behind Napt

to set up a direct-media call for endpoints behind

NAT.

  • Disabled (default)
  • Enabled
directMediaAntiTrombone

Enable

flag on trunk groups facing

AS to allow direct media using C-line trigger (e.g. media

anti-trombone).

  • Disabled (default)
  • Enabled
Note

Note: Direct Media

configuration (directMediaAllowed flag) must be enabled on trunk groups facing the endpoints for this feature to function.

directMediaGroupId

This identifies the direct media group to which this trunk group belongs.(default = 0).

DTLS Profile NameThe name of the Dtls Profile to attach to this Trunk Group. To create a Dtls Profile, refer to Security - DTLS Profile.

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. Set this flag at the Ingress leg of the Trunk Group.

  • Convert (default)
  • Passthru
note

NOTE:

to ‘passthru’
  • to Passthru.
note
  • 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.
  • The SBC gives precedence to SIP Adaptive Transparency Profile over this flag.
note
Lync Share

Set this flag at the Ingress leg of the Trunk Group.

This flag supports Lync/Desktop sharing application media streams.

  • Disabled (default) – lyncShare media streams are not allowed for the specified Trunk Group.
  • Enabled – lyncShare media streams are allowed for the specified Trunk Group.

Refer to Configuring SBC and LYNC in Media Environment for configuration details.

Multiple Audio Streams Support

Determines

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:

  • Disabled (default)
  • Enabled
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: 

  • Disabled (default)
  • Enabled

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.
  • Active – The SDP offer will include "a=direction: active" attribute line.
  • None – The SDP offer will not include a direction attribute line.
  • Passive – The SDP offer will include "a=direction: passive" attribute line.
Tmr64K

Enable this flag to allow the transmission Medium Requirement Unrestricted 64kbit/s control for SIP-ISUP interworking.

  • Disabled (default)
  • Enabled

Media IP Interface Group Name

Name of the IP interface group for media.

Media IP Secondary Interface Group NameSpecifies the name of the secondary (or private address) IP interface group to use for media for calls involving the Microsoft Phone System. The name can be up to 23 characters long.

Media IP Interface Group Name

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. The default value is 0.0.0.0.

Note: Does not apply to D-SBC.

If you prefer to choose an IP address from a range of values configured in Media Port Range (UDP) or TCP Port Range, use set this parameter to the default value  “0.0.0.0” for .

Configure the Media IP Address parameter.Media IP Address can be configured as either an IPv4 of or IPv6 address (except for H.323, which does not support IPv6 addresses). Any The configured 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 refer to 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.

  • Disabled 
  • Enabled (default)

Media Addr Type

The media address type attribute determines the type of IP address the SBC uses in an offer.

  • IPv4 – IPv4 address is selected from the media interface group for the SDP, or else call fails.
  • IPv6 – IPv6 address is selected from the media interface group for the SDP, or else call fails.
  • IPv4 and IPv6 – Both address types are allowed. Additional configuration options are available using the Anat parameters. Refer to Media - Anat.
  • Match Sig Addr Type (default) Selects media IP based on the signaling IP version used for the call. When the SIP peer IP type is known, the media IP will match. When the SIP peer IP version is unknown, the media IP matches the IP version used for signaling (for example, IPv4 first and IPv6 for resolving an FQDN) for the call attempt. When a “Signaling IP version mismatch” results in a collision crank back, the SBC re-selects reselects the media IP to match the new signaling IP version.
Note

Recordable

Enable this flag to support media recording of RTP stream to an external recording device on this SIP trunk group

.

  • Disabled (default)
  • Enabled

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.

  • Disabled (default) – Session level attributes are dropped. Media stream level attributes are dropped unless from a non-core stream.
  • Enabled – All qualified session level and media stream level attributes are relayed (including attributes from a= and b= lines).
Msrp

Enables the MSRP payload relay over TCP connections that will be setup on a successful negotiation of MSRP SDP attributes.The options are:

  • Disabled
  • Enabled (default)
  • Disabled
Omr Allowed
Msrp Mux

Enable this option to reuse an existing TCP connection with an IP peer for multiple MSRP sessions (MSRP multiplexing). MSRP multiplexing applies only to MSRP sessions established using back-to-back user agent (B2BUA) behavior. Multiplexing cannot be applied to MSRP sessions established based on the RFC 6714 “Connection Establishment for Media Anchoring” (CEMA) type of handling. The options are:

  • Disabled (default)
  • Enabled
omrAllowed

Use this parameter to specify when to apply OMR procedures. (see Configuring SBC to Apply OMR Rules for additional details)

  • disabled 
  • Enabled – If this parameter is enabled, OMR procedures are applied to all the calls.
  • Disabled
    • (default) – If this parameter is disabled OMR procedures are not applied to any call. This parameter is disabled by default for backward compatibility.
    Ravel Call Only – when selected
    • enabled – If this parameter is enabled, OMR procedures are applied to all the calls.
    • ravelcallOnly– OMR procedures are applied only to ravel calls.
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    PSX only
    Omr Primary Realm

    Use this parameter to choose which an Address Context realm name to use as the primary realm for this SIP trunk group.

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    PSX onlyPSX only
    Advertise Audio Only

    When enabled SBC sends only the main audio/image stream in the SDP offer. The options are:

    • Enabled
    • Disabled (default)

    Note: This configuration is not supported on ERE and is intended for use only with an external PSX.


    Recordable

    Enable this flag to support the media recording of RTP stream to an external recording device on this SIP trunk group.

    • Disabled (default)
    • Enabled
    Relay Unknown Attrs For Audio Trancode Calls

     Specifies whether or not to relay of unknown SDP attributes in the core audio stream for transcoded calls. Options are:

    • Disabled (default) –  When this option is disabled the SBC drops unknown SDP attributes in messages in the core audio stream for transcoded calls.
    • Enabled  – When this option is enabled for the ingress SIP trunk group, the SBC relays unknown SDP attributes in the core audio stream in the egress INVITE request. When enabled for the egress SIP trunk group, the SBC relays unknown SDP attributes in the core audio stream in 18x or 200 OK responses it sends to the ingress leg.

    SDP Attributes 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.

    • Disabled (default) – Session level attributes are dropped. Media stream level attributes are dropped unless from a non-core stream.
    • Enabled – All qualified session level and media stream level attributes are relayed, which includes attributes from a= and b= lines.

    Source Address Filtering

    When enabled, incoming media packets that do not match the expected source IP address and UDP/TCP port are filtered out.

    • Disabled 
    • Enabled (default)
    Tmr64K

    Enable this flag to allow the transmission Medium Requirement Unrestricted 64kbit/s control for SIP-ISUP interworking.

    • Disabled (default)
    • Enabled
    Lync Share 

    This flag supports Lync/Desktop sharing application media streams. The options are:

     
    • Enabled: When enabled, lyncShare media streams are allowed for the specified Trunk Group.
    • Disabled (default): When disabled, lyncShare media streams are not allowed for the specified Trunk Group.
    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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