Installation manual

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5.2 Connecting the C.O. Line

This section describes how to connect a common C.O. line (4TM and 2BM)

5.2.1 Cautions When Connecting the C.O. Line

When connecting the C.O. line, pay attention to the following criteria to prevent bodily

injuries and system damages:

y Do not connect the C.O. line in extreme weather conditions such as storm and

lightning.

y Do not connect the C.O. line in humid areas.

5.2.2 Connecting Common C.O. Line

Use a pair of AWG #24 (or AWG #26) cable to connect a common C.O. line to the

terminal pin of a terminal box connected to the OfficeServ 7030 system equipped with a

4TM or 2BM board.

Connecting to the 4TM Board

P1 Port

(RJ-45)

Pin No. 1 2 3 4 5 6 7 8

Function PFT

TIP

PFT

RING

- C.O TIP C.O RING - - -

Figure 5.1 P1 (RJ-45) Port of the 4TM Board

P2 ~P4-Port

(RJ-45)

Pin No. 1 2 3 4 5 6 7 8

Function - - - C.O TIP C.O RING - - -

Figure 5.2 P2~P4 (RJ-45) Port of the 4TM Board

5-2