QSC BASIS 922dz, Hardware Manual

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Example #2 - CobraNet X-over mode:
This is the simplest connection you can make between two BASIS boxes. Use a CAT-5 crossover cable connected between the Cobra-
Net ports of each unit. No network switch is required. This connection allows audio to pass between the two BASIS boxes over Cobra-
Net.
Combining example 1 and 2 lets you setup and monitor one box at a time, much as you would have to do using a point-to-point RS232
connection, while passing audio between them, all without a network switch. However, you would have to physically connect your
computer first to one BASIS box and then to the other. With this elementary connection you don't have a true network. It is just like
making RS-232 connections - except that performance is much better.
All the other examples are of proper networks and all require a network switch. On a proper network, you have direct access to all
BASIS products all of the time without having to physically switch between them. You still get the great performance of TCP/IP over
Ethernet. (And we believe QSC's advanced 4th generation networking software provides the best performance of any networked
audio control system available today including Ethernet based systems from competitors.)