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5-72 Reference Guide
Model No.
Running Head
Using the Broadcast Option System Configuration and Operation
CONVERSION
The Conversion information field shows users the conversion setting selected from the
cross-connect screen. The possible values are no (no conversion), sig (signaling is converted,
but not the PCM), pcm (PCM is converted, but not the signaling) and p&s (both signaling and
PCM are converted). This parameter is for information only; you cannot change it.
TYPE
The Type information field show you the type of circuit (v for voice or v&s for voice and
signaling).
WAN STATE
The WAN State information field shows the current status of the port. The possible values are
stdby, actv, test (the user is actively controlling the circuit), OOS (WAN port is Out of
Service), and CGA (WAN port has a CGA alarm). This parameter is for information only; you
cannot change it.
5.23 Using the Broadcast Option
One of the special features of WAN time slot assignment in cross-connect systems is the
ability to copy a data signal and send it to multiple locations without disturbing the original
circuit. This feature is called broadcasting, which means “multi-cast” (not to be confused with
broadcast-quality video transmission).
For example, assume that a major company has a video lecture transmitted from the corporate
headquarters in Denver to the sales office in San Francisco. The sales offices in Salt Lake City,
Houston, and Phoenix would also like to view the lecture.
The master circuit (Denver to San Francisco) is a two-way circuit (i.e., both ends can send and
receive data). The other ends of the broadcast circuits (the sales offices in Salt Lake City,
Houston and Phoenix) will only be able to receive the output of the Denver end of the master
circuit. That is, they will not be able to participate in the live discussion.
The following series of figures shows how the process works.
Figure 5-59 shows the Main Cross-Connect screen. In this example, T1 circuits connected at
the Denver office go to San Francisco (w1-1), Houston (w1-2), Salt Lake City (w2-1), and
Phoenix (w2-2).