Cisco CX-FEIP-1TX= Installation and con?guration Podręcznik Użytkownika Pobierz pdf (Strona 49)

100

101

PTP 800 Series User Guide Compact modem unit (CMU)

phn-2513_004v000 (Oct 2012)

1-9

CMU interfaces

The CMU front panel interfaces are illustrated in Figure 4 and described in Table 4. The

CMU front panel indicator LEDs and their states are described in Table 5.

Figure 4 CMU front panel

Table 4 CMU interfaces

Interface Function

ODU This is a standard N-type female connector, used to connect

the CMU to the ODU or IRFU transceiver via IF cable. The IF

cable carries the following multiplexed signals:

Power supply at –48 V dc

Transmit signal at 350 MHz

Receive signal at 140 MHz

RFU control and status signals

Do not connect or disconnect the IF cable when the –48

V supply is applied to the CMU.

Management This is a 10baseT and 100baseT Ethernet port, used to

connect the CMU to the management network when ‘out-of-

band’ management is implemented. It is not used when ‘in-

band’ management is implemented. For more information on

the Ethernet interfaces see Data network specifications on

page 4-71.

For 1+1 Hot Standby protection, spare pins in the

management port provide the protection interface between

the two CMUs at one end of a link. For more information see

1+1 Hot Standby link protection on page 1-64.

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