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ISDN ANALYZER D1080 - messkom.de

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<strong>ISDN</strong> <strong>ANALYZER</strong> <strong>D1080</strong> USER’S MANUAL REV. 5<br />

150<br />

2 PRBS and a loop box: by setting 2 OUTGOING and the<br />

correct subaddress to call and/or USER-TO-USER to activate<br />

the remote loop, the operator can i<strong>de</strong>ntify the noisiest B<br />

channel with only one instrument, by analyzing the data of<br />

the two PRBS sections.<br />

<strong>D1080</strong><br />

2 OUTGOING<br />

PRBS<br />

GEN<br />

PRBS<br />

MIS<br />

PRBS<br />

GEN<br />

PRBS<br />

MIS<br />

Bx<br />

By<br />

Figura 12-37<br />

LOOP BOX<br />

The instrument is able to simulate the operation of a loop box (se<br />

Chapter 6).<br />

! The instrument can manage two concurrent calls for<br />

PRBS at the same time and in<strong>de</strong>pen<strong>de</strong>ntly and in the<br />

meantime analyze two different network sections.<br />

2 PRBS and 2 instruments: this is the most complete test for<br />

the “User-User” connection. The operator can i<strong>de</strong>ntify the<br />

<strong>de</strong>fective B channel, as well as the noisiest direction of the<br />

channel. The test must be started first from the instrument in<br />

2 incoming mo<strong>de</strong>.<br />

CHAPTER 12. <strong>ISDN</strong> TERMINAL SIMULATOR

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