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Column width 40% Info icon false Related articles: SIP Trunk Group - Media Services - Nat Traversal SIP Trunk Group - Media - CLI SIP Trunk Group - Services - CLI Configuring SBC and LYNC in Media Environment CDR Field Descriptions MS-Lync ICE Support

 

The

Spacevars
0 series4

 allows SBC allows relay support for MS Lync/Skype for business Desktop sharing application media streams. The application sharing media streams are relayed transparently through the SBC over

Spacevars
0 product

 over TCP connections. Interactive Connectivity Establishment (ICE) is completed over this TCP connection by the peer endpoint.

When SBC communicates the

Spacevars
0 product

 communicates with an MS Lync/Skype for business client, SBC expects the

Spacevars
0 product

 expects the TCP connection to be established by the peer endpoint. Hence, SBC does the

Spacevars
0 product

 does not initiate the TCP connection on its own. This is an acceptable behavior as the SBC is

Spacevars
0 product

 is not situated behind a Network Address Translator (NAT).

SBC can The

Spacevars
0 product

 can also be configured to initiate and establish the TCP connection towards the third-party device to support interoperability when SBC relays the  

Spacevars
0 product

 relays an application sharing media stream. This functionality is supported only when the Lync compatible peer endpoint and SBC are the

Spacevars
0 product

 are not situated behind a NAT. 

The following functionalities are included to enhance

Spacevars
0 product

 includes the following MS Lync/Skype behaviorfunctionality:

• SBC supports application Application sharing media streams in Session Description Protocol (SDP).
• SBC accepts Accept and establishes establish TCP connection with media IP/port of the peer application stream.
• SBC exchanges Exchange STUN messages over the TCP connection to negotiate ICE.
• Relay Once ICE is completed, SBC relays desktop share data transparently end-to-end .once ICE is completed

Note

If the parameter sourceAddressFiltering is enabled, SBC the Spacevars 0 product filters incoming media packets, which do not match the expected source IP address and UDP port. In the Lync desktop sharing, the SBC Spacevars 0 product accepts incoming TCP connection that matches any of the source addresses in the candidate lines of the ICE SDP received from the peer. When the SBC Spacevars 0 product has not received an SDP from the peer, before the peer attempts to establish the TCP connection, SBC the Spacevars 0 product ignores source address filtering and allows the TCP connection to be established on the application sharing stream.

...

Note
The MS Lync/Skype Remote Desktop Sharing feature is supported on the following platforms: Spacevars 0 series Spacevars 0 series2 SWe on KVM SWe on VMware

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Related articles: SIP Trunk Group - Media Services - Nat Traversal SIP Trunk Group - Media - CLI SIP Trunk Group - Services - CLI Configuring SBC and LYNC in Media Environment CDR Field Descriptions MS-Lync ICE Support