Nortel Networks NN10035-111 User Manual
3
Copyright © 2003, Nortel Networks
MCP RTP Media Portal Basics
Nortel Networks Confidential
Overview
How this chapter is organized
This chapter is organized as follows:
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Functional description
The Real-time Transport Protocol (RTP) Media Portal is an optional
component of the network that performs many media-layer functions.
The RTP Media Portal addresses media specific issues with advanced
service delivery, Internet addressing efficiencies, and system security.
It functions as a media Network Address and Port Translation (NAPT)
point that shields private network components from external exposure
through leaks in the media streams. The RTP Media Portal also
enables elements in the private network to safely communicate with
elements in the public network. The RTP Media Portal provides IP
address/port pair mapping between internal and external network
components, as well as media anchoring and media pivot abilities for
terminals.
component of the network that performs many media-layer functions.
The RTP Media Portal addresses media specific issues with advanced
service delivery, Internet addressing efficiencies, and system security.
It functions as a media Network Address and Port Translation (NAPT)
point that shields private network components from external exposure
through leaks in the media streams. The RTP Media Portal also
enables elements in the private network to safely communicate with
elements in the public network. The RTP Media Portal provides IP
address/port pair mapping between internal and external network
components, as well as media anchoring and media pivot abilities for
terminals.
Figure 1, “Network Component Interoperability,” on page 4 is a
graphical representation of the RTP Media Portal interworking among
other components in the Multimedia Communications Portfolio.
graphical representation of the RTP Media Portal interworking among
other components in the Multimedia Communications Portfolio.