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Overview

Spacevars
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supports ICE and DTLS with direct media and anti-trombone scenarios. Any call, which is setup as Direct Media call can become a non-Direct Media call due to call transfer or Re-INVITE.
Spacevars
0product
supports conversion of a Direct Media call to Non Direct media and vice versa and handles the ICE/DTLS interactions as per the following:

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1The Inter-SBC Direct Media Scenario with End to End ICE and DTLS Procedure

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Intra-SBC Direct Media Scenarios

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Note

When a call is established as an ICE direct media call, SBC does not support media handling. Therefore, the existing CDR fields are populated for Ingress and Egress local Ip address/ports as 255.255.255.255/65535 and Ingress and Egress remote IP address/ports as 127.0.0.0/5004 for each of the media streams on the call. For more information, refer to the section CDR Field Descriptions.

Call Flows

Inter-SBC Direct Media

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1Inter SBC Direct Media Call Flow

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Intra-SBC Direct Media

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1Intra SBC Direct Media Call Flow

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Anti-trombone Direct Media

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1Anti-trombone Direct Media Call Flow

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SIP UA—IP Phone/PBX
SIP Server—PBX/Softswitch
Dialogx— Number of the dialog
IP—IP address in C line
SBCIP—IP address in Cline of SBC 5x00

Note

The MS Lync/Skype Remote Desktop Sharing feature is supported on the following platforms:

  • SBC 5000 series
  • SBC 7000 series
  • SWe (all environments)