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Appendix F - Automatic Switching F-13
Application switching
Application switching
Application switching, diagramed in figure F-6, also is capable of changing
bandwidth used, but the change is determined entirely by the type of application
being requested ignoring load requirements.
Figure F-6
Application switching diagram, CDM-570/570L
Note: Application switching is not available for SLM-5650A modems. The
following application switching section refers to CDM-570/570L modems.
In a system configured for application switching, the remote site modem/router
looks for a packet in the data stream coming from the LAN that is configured
using the H.323 stack protocol and contains an H.225 signaling protocol. In the
illustration shown in Figure F-6 the signal is a call initiated at the remote site.
The packet is then examined to determine the port number then, from the allo-
cated port ranges, determines the type of application being sent.
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