DSU Input and Output Signaling
Control Terminal These are the control terminal loopback options.
Loopback Options
DSU Internal Loopback | This loopback mode does not affect the external |
| interface but it does loop the local transmit data back to |
| the receive data within the EIM. This test is useful for |
| verifying that the EIM is connected and is working |
| properly from a digital integrity perspective. |
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DSU Internal and | This loopback mode performs the internal loopback |
External loopback | mentioned above along with looping the external |
| transmit to the external receive to allow manual testing |
| of the remote interface. |
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PathBuilder S24x, 26x, and 27x Switch Hardware Installation |
