As revised 2006.05.04
Bionic Buffalo Tech Note #55
Illustration 6: The SDB channel change protocol between an IWU and a broadcast client
In a pure DSMCC environment, the IWU in the diagram above participates in two sessions: one with
the broadcast server, and another with the SDB client.
There are also various nonDSMCC, proprietary protocols similar to the channel change protocol.
7. UserNetwork PassThrough Protocol
The passthrough (passthru) protocol is used to send messages from one user (server or client) to
another user (server or client), using the network as an intermediary. It includes the option for the
recipient to return a responsive message. Message payloads are arbitrary octet sequences.
Copyright 2006 Bionic Buffalo. All rights reserved.
File tn0055; Modified 20060505 12:45:42
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©2006 Bionic Buffalo
carrying selected channels
control connection, employing
SDB channel change protocol