Cisco ONS 15310-CL and Cisco ONS 15310-MA Reference Manual, Release 8.5.1
Chapter 2, Cisco ONS 15310-MA Shelf Assembly Hardware
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Cisco ONS 15310-MA Shelf Assembly Hardware

Table Of Contents

Cisco ONS 15310-MA Shelf Assembly Hardware

2.1  Installation Overview

2.2  Rack Installation

2.2.1  Mounting Brackets

2.2.2  Mounting a Single Node

2.2.3  Mounting Multiple Nodes

2.3  Electrical Interface Assemblies

2.4  Front Door

2.5  Rear Cover

2.6  Power and Ground Description

2.7  Cable Description and Installation

2.7.1  Cabling Types

2.7.2  Fiber Cable Installation

2.7.3  Coaxial Cable Installation

2.7.4  DS-1 Cable Installation

2.7.5  Alarm Cable Installation

2.7.6  BITS Cable Installation

2.7.7  UDC Cable Installation

2.8  Cable Routing and Management

2.8.1  Standard Cable Management Bracket

2.8.2  Extended Cable Management Bracket

2.9  Fan-Tray Assembly

2.9.1  Fan Speed and Power Requirements

2.9.2  Fan Failure

2.9.3  Air Filter

2.9.4  Orderwire

2.10  Cards and Slots


Cisco ONS 15310-MA Shelf Assembly Hardware


This chapter provides a description of Cisco ONS 15310-MA shelf hardware. Instructions for installing equipment are provided in the Cisco ONS 15310-CL and Cisco ONS 15310-MA Procedure Guide.

Chapter topics include:

Installation Overview

Rack Installation

Electrical Interface Assemblies

Power and Ground Description

Cable Description and Installation

Fan-Tray Assembly

Cards and Slots


Note The Cisco ONS 15310-MA assembly is intended for use with telecommunications equipment only.



Note The ONS 15310-MA is designed to comply with Telcordia GR-1089-CORE Type 2 and Type 4. Acceptable applications include Central Office Environments (COEs), Electronic Equipment Enclosures (EEEs), Controlled Environment Vaults (CEVs), huts, and Customer Premise Environments (CPEs).



Warning The intra-building ports of the ONS15310-MA are suitable only for connection to intra-building or unexposed wiring or cabling. The intra-building ports of ONS15310-MA MUST NOT be metallically connected to interfaces that connect to the OSP or its wiring. These interfaces are designed for use as intra-building interfaces only (Type 2 or Type 4 ports as described in GR-1089-CORE, Issue 4) and require isolation from the exposed OSP cabling. The addition of Primary Protectors is not sufficient protection in order to connect these interfaces metallically to OSP wiring.

2.1  Installation Overview

You can mount the ONS 15310-MA in a 19-inch (482.6 mm) or 23-inch (584.2 mm) rack.

The ONS 15310-MA is powered using -48 VDC power. DC power connections are accessed from the rear of the shelf assembly. ONS 15310-MA Ethernet and optical ports are accessible at the front of the shelf assembly, and electrical connections (DS-1, DS-3/EC-1) are accessible at the rear of the shelf assembly through electrical interface assemblies (EIAs).

When installed in an equipment rack, the ONS 15310-MA assembly is typically connected to a fuse and alarm panel that provides centralized alarm connection points and distributed power for the ONS 15310-MA. Fuse and alarm panels are third-party equipment and are not described in this documentation. If you are unsure about the requirements or specifications for a fuse and alarm panel, consult the documentation for that product.


Note In this chapter, the terms "ONS 15310-MA" and "shelf assembly" are used interchangeably. In the installation context, these terms have the same meaning. Otherwise, shelf assembly refers to the physical steel enclosure that holds cards and connects power, and ONS 15310-MA refers to the entire system, both hardware and software.



Note The ONS 15310-MA installations are suitable for Network Telecommunication facilities and locations where NEC are applicable.


Install the ONS 15310-MA in compliance with your local and national electrical codes:

United States: National Fire Protection Association (NFPA) 70; United States National Electrical Code

Canada: Canadian Electrical Code, Part I, CSA C22.1

Other countries: If local and national electrical codes, are not available, refer to IEC 364, Part 1 through Part 7

Detailed compliance and safety information is provided in the Cisco Optical Transport Products Safety and Compliance Information document that ships with the Cisco ONS 15310-MA.

2.2  Rack Installation

The ONS 15310-MA is easily mounted in a 19-inch (482.6 mm) or 23-inch (584.2 mm) equipment rack. The shelf assembly can be mounted so that it projects five inches from the front of the rack. It mounts in both EIA-standard and Telcordia-standard racks. A single shelf assembly is 10.67 inches (27.1 mm) wide and occupies 6 RUs (10.5 in. [267.6 mm]) in a rack when installed with a standard cable management bracket. If an extended cable management bracket is installed below the shelf assembly, an additional RU is occupied, for a total of 7 RUs (12.25 in. [311.1 mm]). Two shelf assemblies can be installed side-by-side in a single 23-inch rack; see the "Mounting Multiple Nodes" section for more information.

The ONS 15310-MA measures 10.44 inches (26.51 cm) high, 10.67 inches (27.10 cm) wide, and 12 inches (20.48 cm) deep. Figure 2-1 shows the dimensions of the ONS 15310-MA shelf assembly.

Figure 2-1 ONS 15310-MA Shelf Assembly Dimensions

2.2.1  Mounting Brackets


Caution Use only the fastening hardware provided with the ONS 15310-MA to prevent loosening, deterioration, and electromechanical corrosion of the hardware and joined material.


Caution When mounting the ONS 15310-MA in a frame with a nonconductive coating (such as paint, lacquer, or enamel) use either the thread-forming screws provided with the ONS 15310-MA shipping kit or remove the coating from the threads to ensure electrical continuity.

The shelf assembly ships with mounting brackets suitable for use with 19-inch (482.6mm) and 23-inch (584.2 mm) racks.

2.2.2  Mounting a Single Node

Mounting the ONS 15310-MA in a rack requires a minimum of 10.5 inches of vertical rack space. To ensure that the mounting is secure, use four #12-24 mounting screws for each side of the shelf assembly. If the larger cable router is used, 12.5 inches of rack space is required.

Figure 2-2 shows a single ONS 15310-MA being mounted in a rack, using a universal bracket.

Figure 2-2 Mounting a Single ONS 15310-MA in a Rack

2.2.3  Mounting Multiple Nodes

Most standard seven-foot (2.1 m) racks can hold numerous ONS 15310-MA nodes and a fuse and alarm panel.

Two shelf assemblies can be installed side-by-side in a single 23-inch rack, using a special mounting bracket. You must install both ONS 15310-MA shelves in the 23-inch rack at one time using the dual-node bracket to support the two shelf assemblies. Cisco does not support the installation of a second ONS 15310-MA adjacent to another node after the first shelf assembly is already installed.

2.3  Electrical Interface Assemblies

High-density EIAs are attached to the ONS 15310-MA shelf assembly backplane to provide up to 168 transmit and receive DS-1 connections through six Champ connectors per side (A and B) or six transmit and receive DS-3/EC-1 connections through six BNC connectors per side. The EIAs are designed to support DS-1, DS-3, and EC-1 signals. The appropriate cable assembly is required depending on the type of signal.


Note The HD expansion connectors on the high-density EIA are not supported in Software Release 8.0.x and earlier.


You can install EIAs on one or both sides of the ONS 15310-MA. As you face the rear of the shelf assembly, the right side is the A side (15310-EIA-HD-A) and the left side is the B side (15310-EIA-HD-B).

Figure 2-3 shows the J connectors on the A- and B-side high-density EIAs installed on the ONS 15310-MA.


Note The J2-CRAFT port is the B port of the CRAFT.


Figure 2-3 High-Density EIA Connectors

To install the EIA on the rear of the shelf assembly, you must first remove the standard sheet metal covers. The EIAs use the same screw holes as the standard sheet metal covers, but they use three holes for panhead screws and two holes for jack screws.

When installed with the standard door and cabling on the backplane, the ONS 15310-MA shelf measures approximately 13.7 inches (34.8 cm) deep when fully populated with backplane cables.

2.4  Front Door

The ONS 15310-MA is orderable with a front door. You must install the ground strap on the door after you install the door (Figure 2-4).

Figure 2-4 ONS 15310-MA Door Ground Strap

2.5  Rear Cover

The ONS 15310-MA SDH is orderable with an optional, clear-plastic, rear cover. The rear cover protects the connectors installed on the back plane of the chassis.

Rear cover specifications are:

Environmental

Operating temperature: -40 to +65 degrees Celsius (-40 to +149 degrees Fahrenheit)

Operating humidity: 5 to 95%, noncondensing

Dimensions

10.59 in. x 10.44 in. x 0.5 in. (26.9 cm x 26.52 cm x 1.27 cm)

Weight: Approximately 0.67 lb (300 g)

2.6  Power and Ground Description

This section describes how to connect the ONS 15310-MA shelf assembly to the power supply. For detailed procedures, refer to the "Install the Cisco ONS 15310-MA" chapter in the Cisco ONS 15310-CL and Cisco ONS 15310-MA Procedure Guide. Terminate the chassis ground (located on both sides of the rear of the shelf assembly or at the bottom of the shelf assembly) to either the office ground or rack ground before you install the power. Use the grounding lug to attach the #6 AWG ground cable to the #10-32 mount ground lug on the shelf assembly according to local site practice.

Ground one cable to ground the shelf assembly. Terminate the other end of the rack ground cable to ground according to local site practice.


Note Additional ground cables may be added depending on the local site practice. The ONS 15310-MA is designated only for a Common Bonding Network (CBN), according to definitions in section 9.3 of GR1089 issue 4.


Figure 2-5 shows the grounding holes on the bottom of the ONS 15310-MA.

Figure 2-5 Ground Holes on the Bottom of the ONS 15310-MA Shelf Assembly

Figure 2-6 show the grounding holes on the sides of the ONS 15310-MA.

Figure 2-6 Ground Holes on the Left and Right Sides of the ONS 15310-MA Shelf Assembly


Caution Always use the supplied ESD wristband when working with a powered ONS 15310-MA. Plug the wristband cable into either ESD jack, located on the far left and right slots of the shelf assembly.


Note Use an external disconnect for service purposes and install it according to local site practice.


The ONS 15310-MA DC power provides redundant -48 VDC power terminals on the rear of the chassis. The terminals are labeled A and B and are located at each end of the shelf assembly.

To install redundant power feeds, use four power cables and one ground cable. For a single power feed, only two power cables and one ground cable are required. Use #12 AWG power cables and a #6 AWG ground cable and, to ensure circuit overcurrent protection, use a conductor with low impedance. The conductor must have the capability to safely conduct any fault current that might be imposed. Do not use aluminum conductors.


Note The battery return connection (+48Vdc) can be treated as DC-I, as defined in Telcordia GR-1089-CORE Issue 4.



Caution If the system loses power or the CTX2500 card is reset, you must reset the ONS 15310-MA clock unless the node has been previously provisioned to use Simple Network Time Protocol (SNTP). SNTP updates the clock over the LAN.

2.7  Cable Description and Installation

This section describes fiber-optic, DS-3/EC-1 (coaxial), DS-1 (64-pin Champ), UDC, and twisted-pair cables.

2.7.1  Cabling Types

The following types of cables are used with the ONS 15310-MA:

Optical cables: The OC-3/12/48 signals operate over fiber spans through SFP optics, including intermediate-reach (IR) and long-reach (LR) SFPs. Specification references can be found for the interface in ITU G.957 and Telcordia GR-253. See the "Fiber Cable Installation" section for more information. Make sure the fiber cables do not bend excessively; maintaining a proper bend radius prevents damage to the optical cable.

DS-1 cables: DS-1 cables (shielded, twisted-pair) connect to the electrical ports at the rear of the shelf assembly using Champ cable connectors. DS-1 cables carry DS-1 traffic to and from the ONS 15310-MA. The ONS 15310-MA supports up to three transmit and three receive Champ-64 connectors on each side of the shelf assembly, for a maximum of 84 DS-1 signals per side of the shelf.

A compatible DS-1 cable is available from Atlanta Cable Sales, Inc.

Atlanta Cable Sales, Inc.
495 Horizon Drive, Suite 200
Suwanee, GA 30024
1-800-241-9881, Ext. 4014
http://www.acssolutions.com

The ACS part number and description are: T015654-Length. Cable assembly with the cable exit at 1 & 33. This cable solution offers two screw points on the cable head for attachment, see Figure 2-7 , and is equivalent in characteristics to the defacto 1161A rated cable.

Figure 2-7 ACS Cable T015654

Refer to Table 2-1 for compatible DS-1 cables available from Lorom Indrustrial Co., LTD.

Lorom Industrial Co., LTD.
15th Floor, Room 2, Number 78, Sec 2
AN-HO Road
Taipei, Taiwan
Phone: 886-2-2706-6037
Fax: 886-2-2704-6396

Table 2-1 DS-1 Cables

ACS Part Numbers
Length
Description

PCAM90SPA0PC001

25 feet

Connector-Wire Wrap, DSX

PCAM90SPA1OC001

50 feet

Connector-Wire Wrap, DSX

PCAM90SPA3MC001

100 feet

Connector-Wire Wrap, DSX

PCAM90SPA7IC001

200 feet

Connector-Wire Wrap, DSX


Coaxial cables: Coaxial cables connect to the electrical ports using BNC cable connectors. Coaxial cables carry DS-3/EC-1 traffic to and from the ONS 15310-MA. The ONS 15310-MA supports up to three transmit and three receive coaxial connectors on each shelf assembly.


Warning The DS1/DS3 ports on the ONS15310-MA are intra-building ports and are suitable only for connecting to shielded cabling grounded at both ends.

RJ-45 cables: RJ-45 cables connect to the LAN, CRAFT, and UDC ports. An unshielded twisted-pair (STP) #22 or #24 AWG wire is required for the CRAFT and UDC ports. Unshielded twisted-pair is sufficient for the alarm and LAN(rear). 10/100-Mbps RJ-45 Ethernet STP (Shielded Twisted Pair) cables are used to connect the CE-100T-8 and ML-100T-8 cards.

Alarm and timing (BITS) cables: The Alarm In port requires a shielded cable terminated with a DB-37 connector; Alarm Out requires a shielded cable terminated with a DB-25 connector; and the building integrated timing supply (BITS) ports require DB-9 connectors or a DB9BIT=BB9 to wire wrap adapter.

2.7.2  Fiber Cable Installation

To install fiber-optic cables on the ONS 15310-MA, a fiber cable with an LC connector must be connected to an SFP. SFPs are installed in the SFP port on the ONS 15310-MA. Each LC connector contains the transmit (Tx) and receive (Rx) signal for that port. Cisco recommends that you label the transmit and receive ports and the working and protection fibers at each end of the fiber span to avoid confusion with cables that are similar in appearance.

You can route fiber cables through the optional fiber guide, installed at the bottom of the shelf assembly (Figure 2-8).

Figure 2-8 Shelf Assembly with Fiber Guide Installed


Caution You must provide some type of strain relief for the cables, using either a tie-bar or other site-specific solution.


Note Clean all fiber connectors thoroughly. Dust particles can degrade performance. Put caps on any fiber connectors that you do not use.


2.7.3  Coaxial Cable Installation

For DS-3/EC-1 traffic, the ONS 15310-MA uses coaxial cables and connectors. Cisco recommends connecting a 735A coaxial cable to a patch panel. Use a compatible male BNC connector to connect the cable to the DS-3/EC-1 ports. The DS-3/EC-1 cables should be terminated with BNC connectors on the ONS 15310-MA side and BNC connectors on the client side.

Due to the minimal space between BNC connectors and DS-1 connectors, you might require a special tool for inserting and removing BNC EIAs (Figure 2-9).

Figure 2-9 BNC Insertion and Removal Tool

This tool can be obtained with P/N 227-T1000 from:

Amphenol USA (www.amphenol.com)
One Kennedy Drive
Danbury, CT 06810
Phone: 203 743-9272 Fax: 203 796-2032

This tool can be obtained with P/N RT-1L from:

Trompeter Electronics Inc. (www.trompeter.com)
31186 La Baya Drive
Westlake Village, CA 91362-4047
Phone: 800 982-2629 Fax: 818 706-1040

2.7.4  DS-1 Cable Installation

The ONS 15310-MA uses 64-pin Champ connector cabling for DS-1 connections.

Table 2-2 lists the Champ connector pin assignments and the corresponding EIA connector mapping for connectors J8 and J9 on the EIA installed on the A side, and connectors J21 and J22 on the EIA installed on the B side.

Table 2-2 Champ Connector Pin Assignments—Side-A EIA, Connectors J8 and J9; Side-B EIA, Connectors J21 and J22 

Signal
Pin
Signal
Pin

Ring Port 1

1

Tip Port 1

33

Ring Port 2

2

Tip Port 2

34

Ring Port 3

3

Tip Port 3

35

Ring Port 4

4

Tip Port 4

36

Ring Port 5

5

Tip Port 5

37

Ring Port 6

6

Tip Port 6

38

Ring Port 7

7

Tip Port 7

39

Ring Port 8

8

Tip Port 8

40

Ring Port 9

9

Tip Port 9

41

Ring Port 10

10

Tip Port 10

42

Ring Port 11

11

Tip Port 11

43

Ring Port 12

12

Tip Port 12

44

Ring Port 13

13

Tip Port 13

45

Ring Port 14

14

Tip Port 14

46

Ring Port 15

15

Tip Port 15

47

Ring Port 16

16

Tip Port 16

48

Ring Port 17

17

Tip Port 17

49

Ring Port 18

18

Tip Port 18

50

Ring Port 19

19

Tip Port 19

51

Ring Port 20

20

Tip Port 20

52

Ring Port 21

21

Tip Port 21

53

Ring Port 22

22

Tip Port 22

54

Ring Port 23

23

Tip Port 23

55

Ring Port 24

24

Tip Port 24

56

Ring Port 25

25

Tip Port 25

57

Ring Port 26

26

Tip Port 26

58

Ring Port 27

27

Tip Port 27

59

Ring Port 28

28

Tip Port 28

60

Unused

29

Unused

61

Unused

30

Unused

62

Unused

31

Unused

63

Unused

32

Unused

64


Table 2-3 lists the Champ connector pin assignments and the corresponding EIA connector mapping for connectors J10 and J11 on the EIA installed on the A side, and connectors J23 and J24 on the EIA installed on the B side.

Table 2-3 Champ Connector Pin Assignments—Side-A EIA, Connectors J10 and J11; Side-B EIA, Connectors J23 and J24 

Signal
Pin
Signal
Pin

Ring Port 29

1

Tip Port 29

33

Ring Port 30

2

Tip Port 30

34

Ring Port 31

3

Tip Port 31

35

Ring Port 32

4

Tip Port 32

36

Ring Port 33

5

Tip Port 33

37

Ring Port 34

6

Tip Port 34

38

Ring Port 35

7

Tip Port 35

39

Ring Port 36

8

Tip Port 36

40

Ring Port 37

9

Tip Port 37

41

Ring Port 38

10

Tip Port 38

42

Ring Port 39

11

Tip Port 39

43

Ring Port 40

12

Tip Port 40

44

Ring Port 41

13

Tip Port 41

45

Ring Port 42

14

Tip Port 42

46

Ring Port 43

15

Tip Port 43

47

Ring Port 44

16

Tip Port 44

48

Ring Port 45

17

Tip Port 45

49

Ring Port 46

18

Tip Port 46

50

Ring Port 47

19

Tip Port 47

51

Ring Port 48

20

Tip Port 48

52

Ring Port 49

21

Tip Port 49

53

Ring Port 50

22

Tip Port 50

54

Ring Port 51

23

Tip Port 51

55

Ring Port 52

24

Tip Port 52

56

Ring Port 53

25

Tip Port 53

57

Ring Port 54

26

Tip Port 54

58

Ring Port 55

27

Tip Port 55

59

Ring Port 56

28

Tip Port 56

60

Unused

29

Unused

61

Unused

30

Unused

62

Unused

31

Unused

63

Unused

32

Unused

64


Table 2-4 lists the Champ connector pin assignments and the corresponding EIA mapping for connectors J12 and J13 on the A-side EIA, and connectors J25 and J26 on the B-side EIA.

Table 2-4 Champ Connector Pin Assignments—Side-A EIA, Connectors J12 and J13; Side-B EIA, Connectors J25 and J26 

Signal
Pin
Signal
Pin

Ring Port 57

1

Tip Port 57

33

Ring Port 58

2

Tip Port 58

34

Ring Port 59

3

Tip Port 59

35

Ring Port 60

4

Tip Port 60

36

Ring Port 61

5

Tip Port 61

37

Ring Port 62

6

Tip Port 62

38

Ring Port 63

7

Tip Port 63

39

Ring Port 64

8

Tip Port 64

40

Ring Port 65

9

Tip Port 65

41

Ring Port 66

10

Tip Port 66

42

Ring Port 67

11

Tip Port 67

43

Ring Port 68

12

Tip Port 68

44

Ring Port 69

13

Tip Port 69

45

Ring Port 70

14

Tip Port 70

46

Ring Port 71

15

Tip Port 71

47

Ring Port 72

16

Tip Port 72

48

Ring Port 73

17

Tip Port 73

49

Ring Port 74

18

Tip Port 74

50

Ring Port 75

19

Tip Port 75

51

Ring Port 76

20

Tip Port 76

52

Ring Port 77

21

Tip Port 77

53

Ring Port 78

22

Tip Port 78

54

Ring Port 79

23

Tip Port 79

55

Ring Port 80

24

Tip Port 80

56

Ring Port 81

25

Tip Port 81

57

Ring Port 82

26

Tip Port 82

58

Ring Port 83

27

Tip Port 83

59

Ring Port 84

28

Tip Port 84

60

Unused

29

Unused

61

Unused

30

Unused

62

Unused

31

Unused

63

Unused

32

Unused

64


2.7.5  Alarm Cable Installation

The alarm cables attach to the rear of the ONS 15310-MA at the ALARM In and ALARM Out ports. The other ends of the cables plug into the alarm-collection equipment. Terminate the ends of these cables according to local site practice. The pins on the ALARM In and ALARM Out ports correspond to the 32 external alarm inputs and the 8 external alarm outputs (controls) that you can define using Cisco Transport Controller (CTC).

Table 2-5 shows the default input alarm pinouts and the corresponding alarm numbers assigned to each port. Refer to this table when connecting alarm cables to the ONS 15310-MA.

Table 2-5 Default Alarm Pin Assignments—Inputs 

DB-37 Pin Number
Function
DB-37 Pin Number
Function

1

Alarm 1

20

Alarm 18

2

Alarm 2

21

Alarm 19

3

Alarm 3

22

Alarm 20

4

Alarm 4

23

Alarm 21

5

Alarm 5

24

Alarm 22

6

Alarm 6

25

Alarm 23

7

Alarm 7

26

Alarm 24

8

Alarm 8

27

Common 17-24

9

Common 1-8

28

Alarm 25

10

Alarm 9

29

Alarm 26

11

Alarm 10

30

Alarm 27

12

Alarm 11

31

Alarm 28

13

Alarm 12

32

Alarm 29

14

Alarm 13

33

Alarm 30

15

Alarm 14

34

Alarm 31

16

Alarm 15

35

Alarm 32

17

Alarm 16

36

Common 25-32

18

Common 9-16

37

N/C

19

Alarm 17


Table 2-6 shows the default output alarm pinouts and the corresponding alarm numbers assigned to each port. Refer to this table when connecting alarm cables to the ONS 15310-MA.

Table 2-6 Default Alarm Pin Assignments—Outputs 

DB-25 Pin Number
Function
DB-25 Pin Number
Function

1

Out 1+

14

Out 2+

2

Out 1-

15

Out 2-

3

16

Out 3+

4

17

Out 3-

5

18

Out 4+

6

19

Out 4-

7

20

Out 5+

8

21

Out 5-

9

22

Out 6+

10

23

Out 6-

11

24

Out 7+

12

Out 8+

25

Out 7-

13

Out 8-


For more information about external alarms and controls, see the "External Alarms and Controls" section.

2.7.6  BITS Cable Installation

The BITS clock cable (terminated with a DB-9 connector or with a DB9BIT=BB9 to wire wrap adapter) attaches to the BITS port on the ONS 15310-MA. The other end of the cable plugs into the BITS clock, terminate this end of the cable according to local site practice. In case the DB9BIT=BB9 to wire wrap adapter is used on the ONS15310-MA, the cable shield must be wire-wrapped to the GND pin of the wire wrap adapter.

The 15310-MA has one BITS input and one BITS output. The BITS inputs and outputs have corresponding pins on the DB-9 BITS ports. When connecting BITS cable to the ONS 15310-MA, see Table 2-7 for the BITS cable pin assignments.

For more information about connecting BITS timing to the ONS 15310-MA, refer to Chapter 7 "Timing."

Table 2-7 BITS Cable Pin Assignments 

DB-9 Pin Number
Function

1

BITS Output+

2

BITS Output-

3

4

5

6

BITS Input+

7

BITS Input-

8

9



Note Refer to Telcordia SR-NWT-002224 for rules about how to provision timing references.


2.7.7  UDC Cable Installation

The 64K, EIA/TIA-232 user data channel (UDC) interface provides F1 and F2 byte input and output. When connecting the UDC cable to the ONS 15310-MA, see Table 2-8 for the UDC cable pin assignments. Unshielded twisted-pair #22 or #24 AWG wire is required for the UDC ports.

Table 2-8 UDC Cable Pin Assignments 

RJ-45 Pin Number
RS-232/64K Mode

1

TX +

2

TX -

3

RX +

4

5

6

RX -

7

8


2.8  Cable Routing and Management

Two types of cable management brackets are available for the ONS 15310-MA shelf assembly: the standard bracket, which ships with the ONS 15310-MA ship kit, and the extended bracket, which ships as a separate orderable part. You can install either bracket under the shelf assembly.

2.8.1  Standard Cable Management Bracket

The standard cable management bracket has one area in the rear that can be used for routing cables. Fiber-optic cable can be routed through the rear trough of the bracket. Ethernet cables can be passed through the front of the bracket to be bundled and secured using tie-wraps or other site-specific materials.

Figure 2-10 shows the installation of the standard cable management bracket.

Figure 2-10 Installing the Standard Cable Management Bracket

2.8.2  Extended Cable Management Bracket

The extended cable management bracket has two areas that can be used for routing cables, one in the front and one in the rear. Fiber-optic cables can be routed through the smaller front trough, and Ethernet cables can be routed through the larger rear trough.

Figure 2-11 shows the installation of the extended cable management bracket.

Figure 2-11 Installing the Extended Cable Management Bracket

2.9  Fan-Tray Assembly

The fan-tray assembly is located at the top of the ONS 15310-MA shelf assembly, under the air filter, rear exhaust, and air inlet. The fan tray is a removable drawer that holds four fans, the fan-control circuitry, and the fuse-control circuitry for the ONS 15310-MA. After you install the fan tray, you should only need to access it if a fan failure occurs.

The new fan-tray assembly (FTA2) has a fuse-control circuitry that is capable of blowing a low-current fuse (1/4-A to 1/2-A). This is useful when you are using power distribution equipment that has a low current fuse connected in parallel with the main fuse to help detect any failures in the main fuse. The fuse-control circuitry independently draws a short current (approximately 900 mA) for about 0.7 seconds every 15 minutes (at 24 degrees Celsius or 120 degrees Fahrenheit), alternating between power supply inputs A and B. This allows the ONS 15310-MA to blow the low current fuse when there is a failure or loss of the main fuse and report an alarm (FAN alarm).

The front of the fan-tray assembly has CRIT, MAJ, and MIN alarm LEDs that illuminate if a Critical, Major, or Minor alarm is present anywhere on the ONS 15310-MA assembly.

2.9.1  Fan Speed and Power Requirements

Fan speed is controlled by temperature sensors on the CTX2500 card. The sensors measure the input air temperature at the fan-tray assembly. Fan speed options are low, medium, and high.

2.9.2  Fan Failure

If one or more fans fail on the fan-tray assembly, replace the entire assembly. You cannot replace individual fans. The red Fan Fail LED on the front of the fan tray illuminates when one or more fans fail. For fan-tray replacement instructions, refer to the Cisco ONS 15310-CL and Cisco ONS 15310-MA Troubleshooting Guide. The red Fan Fail LED is unlit after you install a working fan tray.


Note The red Fan Fail LED on the front of the fan tray illuminates when only one power source is connected to the chassis, or any fuse blows.


2.9.3  Air Filter

The ONS 15310-MA contains a reusable air filter (15310-MA-FTF) that is installed above the fan-tray assembly. The reusable filter is made of a gray, open-cell, polyurethane foam that is specially coated to provide fire and fungi resistance. Spare filters should be kept in stock.


Caution Do not operate an ONS 15310-MA without the mandatory fan-tray air filter.

2.9.4  Orderwire

Orderwire allows a craftsperson to plug a phone set into an ONS 15310-MA and communicate with craftspeople working at other ONS 15310-MA nodes or other facility equipment. The orderwire is a pulse code modulation (PCM) encoded voice channel that uses E1 or E2 bytes in the MSOH and in the regenerator section overhead.

The FTA allows simultaneous use of both local (RSOH signal) and express (MSOH signal) orderwire channels on a SONET ring or particular optics facility. Express orderwire also allows communication through regeneration sites when the regenerator is not a Cisco device.

You can provision orderwire functions with CTC similar to the current provisioning model for DCC channels. In CTC, you provision the orderwire communications network during ring turn-up so that all network elements (NEs) on the ring can communicate with one another. Orderwire terminations (that is, the optics facilities that receive and process the orderwire channels) are provisionable. Both express and local orderwire can be configured as on or off on a particular SONET facility. The ONS 15310-MA supports up to four orderwire channel terminations per shelf. This allows linear, single ring, dual ring, and small hub-and-spoke configurations. Keep in mind that orderwire is not protected in ring topologies such as path protection configurations.


Note The Cisco ONS 15310-MA Orderwire functionality is compatible with Cisco ONS 15454 Orderwire functionality.



Caution Do not configure orderwire loops. Orderwire loops cause feedback that disables the orderwire channel.

The ONS 15310-MA implementation of both local and express orderwire is broadcast in nature. The line acts as a party line. Anyone who picks up the orderwire channel can communicate with all other participants on the connected orderwire subnetwork. The local orderwire party line is separate from the express orderwire party line. Up to four STM-N facilities for each local and express orderwire are provisionable as orderwire paths.

The FTA supports selective dual tone multifrequency (DTMF) dialing for telephony connectivity, which causes specific or all ONS 15310-MA FTAs on the orderwire subnetwork to "ring." The ringer/buzzer resides on the FTA. There is also a "ring" LED that mimics the FTA ringer. It flashes when a call is received on the orderwire subnetwork. A party line call is initiated by pressing *0000 on the DTMF pad. Individual dialing is initiated by pressing * and the individual four-digit number on the DTMF pad. The station number of the node is provisioned in CTC.

The orderwire ports are standard RJ-11 receptacles. The pins on the orderwire ports correspond to the tip and ring orderwire assignments.

Table 2-9 describes the orderwire pin assignments.

Table 2-9 Orderwire Pin Assignments 

RJ-11 Pin Number
Description

1

Four-wire receive ring

2

Four-wire transmit tip

3

Two-wire ring

4

Two-wire tip

5

Four-wire transmit ring

6

Four-wire receive tip


When provisioning the orderwire subnetwork, make sure that an orderwire loop does not exist. Loops cause oscillation and an unusable orderwire channel.

Figure 2-12 shows the standard RJ-11 connectors used for orderwire ports. Use a shielded RJ-11 cable.

Figure 2-12 RJ-11 Cable Connector

2.10  Cards and Slots


Caution Always use the supplied ESD wristband when working with a powered ONS 15310-MA. Plug the wristband cable into either ESD jack, located on the far left and right slots of the shelf assembly.

The ONS 15310-MA has six card slots. Slots 3 and 4 are dedicated to the common-control (CTX2500) cards. Slots 1, 2, 5, and 6 can accommodate the following traffic cards:

Ethernet: CE-100T-8 card, ML-100T-8 card

Electrical: DS1-28/DS3-EC1-3 card, DS1-84/DS3-EC1-3 card

These cards have plugs at the rear of the card. When the ejectors are fully closed, the card plugs into the assembly backplane.

When no card is installed in a card slot, a filler card should be installed. Use a CTX2500 filler card in empty CTX2500 slots (Slots 3 and 4), and an expansion filler card in empty traffic card slots (Slots 1, 2, 5, and 6). Refer to Chapter 3 "Card Reference" for more information about ONS 15310-MA cards.

Figure 2-13 shows card installation for the ONS 15310-MA.

Figure 2-13 Installing a Card in an ONS 15310-MA

Table 2-10 lists the number of ports, line rates, connector options, and connector locations for ONS 15310-MA electrical, Ethernet, and optical interfaces.

Table 2-10 Port Line Rates, Connector Types, and Locations 

Interface
Ports
Line Rate per Port
Connector Type
Connector Location

DS-1

28/84

1.544 Mbps

Champ

Rear of the 15310-MA shelf assembly

DS-3

3

44.736 Mbps

BNC

Rear of the 15310-MA shelf assembly

EC-1

3

51.84 Mbps

BNC

Rear of the 15310-MA shelf assembly

OC-3/OC-12/OC-48

2

155.52 Mbps (STS-3)

622.08 Mbps (STS-12)

LC

CTX2500 card faceplate

Ethernet (CE-100T-8 card)1

8

10/100 Mbps

RJ-45

CE-100T-8 card faceplate

Ethernet (ML-100T-8 card)2

8

10/1000 Mbps

RJ-45

ML-100T-8 card faceplate

1 The CE-100T-8 card with PID 15310-CE-100T-8 is not compatible with the ONS 15310-MA, only the ONS 15310-CL. The 15310-P-CE-100T-8 is compatible with both the ONS 15310-MA and ONS 15310-CL shelf assemblies.

2 The ML-100T-8 card with PID 15310-ML-100T-8 is not compatible with the ONS 15310-MA, only the ONS 15310-CL. The 15310-P-ML-100T-8 is compatible with both the ONS 15310-MA and ONS 15310-CL shelf assemblies.