Mechanical Interface Cards; Mic Description; Physical Interface; Figure 13-6 Mic A Card Faceplate - Cisco ONS 15327 User Documentation

Chapter 13 Card Reference

13.4 Mechanical Interface Cards

This section describes the features and functions of the MICs.

13.4.1 MIC Description

Two MIC cards (MIC A and MIC B) are required to operate the Cisco ONS 15327 if you are using
XTC-28-3 cards and/or you need redundant power inputs. The MICs provide power connection points,
physical interfaces for DS-1s and DS-3s, and external timing and alarm interfaces.
Figure 13-6

Figure 13-6 MIC A card faceplate

Figure 13-7

Figure 13-7 MIC B card faceplate

13.4.1.1 DS-1 Physical Interface
Each MIC uses a 64-pin CHAMP connector to provide 14 DS-1 interfaces. MIC-28-3-A provides
connection to DS-1s 1 – 14, and MIC-28-3-B provides connection to DS-1s 15 – 28. The XTC cards
house the electrical tributary circuitry for managing the individual DS-1s.
13.4.1.2 DS-3 Physical Interface
Because transmit (out) and receive (in) interfaces are on different cards, you must install both MICs to
use the DS-3 capabilities of the ONS 15327. The DS-3 interfaces use BNC connectors. MIC-28-3-A
provides the three transmit (Tx) interfaces and MIC-28-3-B provides the three receive (Rx) interfaces.
The XTC-28-3 card houses the electrical-tributary circuitry for managing DS-3s.
June 2002
Height: 1.080 in.
–
– Width: 9.375 in.
Depth: 9.172 in.
–
shows the MIC A faceplate. MIC A is keyed so that it can only be installed in Slot 8.
Tx 1 Tx 2 Tx 3
shows the MIC-28-3-B faceplate. MIC-B is keyed so that it can only be installed in Slot 7.
Rx 1 Rx 2 Rx 3
BITS ALARM
BITS ALARM
Cisco ONS 15327 User Documentation, R3.3
Mechanical Interface Cards
-48V
DS1 (1-14)
-48V
DS1 (15-28)
RTN
PWRA
RTN
PWRB
13-9