ISDN ANALYZER D1080 - messkom.de

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ISDN ANALYZER D1080 USER’S MANUAL REV. 5 148 D1080 A OUTGOING INCOMING PRBS GEN PRBS MIS Tx Rx Bx Figura 12-34 Rx Tx D1080 B PRBS MIS PRBS GEN The test must be started first from the instrument in INCOMING mode. 12.2.1.2. 128 kb – two B channels This mode makes it possible to check the entire Basic Access by using the two B channels of the interface. The test can also be executed for Primary Access. Several configurations are available: autocall: during a “User-Network” test, the operator can test the state of the B channels up to the local network to which the user is connected. The data are the sum of the transmitted and the received data. The entire interface is tested, but the operator cannot tell which B channel is not working properly. CHAPTER 12. ISDN TERMINAL SIMULATOR
USER’S MANUAL REV. 5 ISDN ANALYZER D1080 D1080 CallsRx = NO OUTGOING PRBS GEN PRBS MIS Tx Rx Rx Tx Bx By Figura 12-35 by using a remote D1080: by setting both instrument with OUTGOING call, the operator can identify the noisiest B channel. This is only possible with another instrument. For tests at 128 kb a remote loop box can be used, as described below. Figura 12-36 CHAPTER 12. SDN TERMINAL SIMULATOR 149
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ISDN ANALYZER D1080 - messkom.de

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