CTC Union FMUX04 Manuel d'utilisateur télécharger pdf (Page 47)

Chapter 5. Loop Back Testing

5-1 FMUX-01Mar 2003

5.1 General

In this chapter we shall explain the functioning of the loop back modes available in

the MULTIPLEXER UNIT. As of printing of this manual (F/W ver. 1.03) the loop back

modes available include Local, Remote, and Remote Request Loop Backs for the Optical

interface and the secondary Optical interface (if redundant) as well as Local Loop Back,

Near End Loop Back, Remote Loop Back, and Request Remote Loop Back for the E1 and

T1 4-Channel Port Cards.

5.2 Loop Back Modes

Optical Section

* LLB (Optical local loop back)

near end (NE) far end (FE)

* RLB (Optical Remote loop back)

near end (NE) far end (FE)

* RRLB (Request optical remote loop back)

near end (NE) far end (FE)

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CTC Union FMUX04 Manuel d'utilisateur Page 47