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Cisco ONS 15327 Product Overview

Mechanical Interface Cards

Cisco ONS 15327 Product Overview, R3.3

June 2002

Mechanical Interface Cards

The two MICs, MIC-28-3-A and MIC-28-3-B, provide the physical connection

points for the DS-1 and DS-3 interfaces on the XTC cards. They also provide

redundant power inputs, inputs and outputs for user-provisionable alarms and

controls, and a Building Integrating Timing Supply (BITS) timing input and

output.

Each MIC provides 14 DS-1 interfaces for a total of 28 DS-1 interfaces, combined

the MICs provide three DS-3 interfaces.

Figure 6 MIC-28-3-A faceplate

Because the three transmit (Tx) interfaces are on MIC-28-3-A and the three

receive (Rx) interfaces are on MIC-28-3-B, you must install both MICs to use the

DS-3 capabilities of the ONS 15327.

Figure 7 MIC-28-3-B faceplate

The electrical tributary circuitry for managing individual DS-1s and DS-3s

resides in the XTC cards; therefore, you must provision DS-1 and DS-3 circuits

using the XTC card.

Each MIC has three input contacts and one output contact. These contacts provide

up to six external input alarms and two external output controls that you can

provision in CTC. Each MIC also provides connection for one BITS clock input

and one BITS clock output. Slots 7 and 8 are the MIC slots.

45894

BITS

MIC A

ALARM

DS1 (1-14)

Tx 1 Tx 2 Tx 3

PWRA

RTN-48V

45895

BITS

MIC B

ALARM

DS1 (15-28)

Rx 1 Rx 2 Rx 3

PWRB

RTN-48V

1 2 3 4 5 6 7 8 9 10 11 ... 49 50

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