Chapter 10

Multisite and Business-to-Business (B2B) Collaboration Solutions

This chapter covers the following topics:

  • Firewall Issues in a Collaboration Environment: Examines firewall issues that could prevent UDP media packets from routing through a corporate firewall, whereby preventing audio and video calls from connecting.

  • NAT Issues in a Collaboration Environment: Examines NAT issues that could prevent UDP media packets from routing through a network edge NAT server, thereby preventing audio and video calls from connecting.

  • Purpose of STUN, TURN, and ICE: Describes the IETF solutions to NAT traversal, identifying the strengths and weaknesses of each solution, and the limitations of the solution as a whole.

  • Expressway Media Traversal:

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