13-9
Cisco ONS 15327 User Documentation, R3.3
June 2002
Chapter 13 Card Reference
Mechanical Interface Cards
–
Height: 1.080 in.
–
Width: 9.375 in.
–
Depth: 9.172 in.
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.
shows the MIC A faceplate. MIC A is keyed so that it can only be installed in Slot 8.
Figure 13-6 MIC A card faceplate
shows the MIC-28-3-B faceplate. MIC-B is keyed so that it can only be installed in Slot 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.
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
Summary of Contents for ONS 15327
Page 22: ...Contents xxii Cisco ONS 15327 User Documentation June 2002 I N D E X ...
Page 30: ...Figures xxviii Cisco ONS 15327 User Documentation June 2002 ...
Page 44: ...Procedures xlii Cisco ONS 15454 Installation and Operations Guide R3 2 June 2002 ...
Page 540: ...Glossary GL 16 Cisco ONS 15327 User Documentation R3 3 June 2002 ...