Guest

Cisco ONS 15454 Series Multiservice Provisioning Platforms

Installing ONS 15454 SDH E1-N-14 Cards

  • Viewing Options

  • PDF (301.8 KB)
  • Feedback
Installing ONS 15454 SDH E1-N-14 Cards

Table Of Contents

Installing ONS 15454 SDH E1-N-14 Cards

E1-N-14 Card

E1-N-14 Card-Level Indicators

E1-N-14 Port-Level Indicators

E1-N-14 Specifications

Installation Procedures

Card Turn Up

Verify Successful Turn Up of the E1-N-14 Card

Removal Procedures

Reset an Electrical Card (E1-N-14, DS3iN-12, or E3-12)

Replace an In-Service Electrical Card (E1-N-14, DS3iN-12, or E3-12)

Related Documentation

Obtaining Documentation and Submitting a Service Request


Installing ONS 15454 SDH E1-N-14 Cards


Product Name: 15454E-E1N-14=

This document contains a description of E1-N-14 card features, installation procedures, removal instructions, and technical specifications. Use this document in conjunction with the Cisco ONS 15454 SDH Installation and Operations Guide and the Cisco ONS 15454 SDH Troubleshooting and Reference Guide when working with E1-N-14 cards.

This document contains the following sections:

"E1-N-14 Card" section

"E1-N-14 Specifications" section

"Installation Procedures" section

"Removal Procedures" section

"Related Documentation" section

"Obtaining Documentation and Submitting a Service Request" section

This document contains the following procedures:

"Installation Procedures" procedure

"Card Turn Up" procedure

"Verify Successful Turn Up of the E1-N-14 Card" procedure

"Removal Procedures" procedure

"Reset an Electrical Card (E1-N-14, DS3iN-12, or E3-12)" procedure


Note For information about circuits and card capacities, see the Cisco ONS 15454 SDH Installation and Operations Guide.


E1-N-14 Card

The fourteen-port ONS 15454 SDH E1-N-14 card provides fourteen ITU-compliant, G.703 E-1 ports. Each port of the E1-N-14 card operates at 2.048 MBits/s (Mbps) over a 120 ohms twisted-pair copper cable (with FMEC-DS1/E1) or over a 75 ohms unbalanced coaxial cable (with FMEC-E1). Figure 1 shows the E1-N-14 faceplate and Figure 2 shows a block diagram of the card.

Figure 1 E1-N-14 faceplate

Each E1-N-14 port features ITU-T G.703 compliant level outputs and inputs supporting cable losses of up to 6 dB @ 1024 kHz.

The E1-N-14 card supports 1:N (N £ 4) protection. You can also provision the E1-N-14 to monitor line and frame errors in both directions.

The E1-N-14 card can function as a working or protect card in 1:1 or 1:N protection schemes. If you use the E1-N-14 as a standard E-1 card in a 1:1 protection group, you can install the E1-N-14 card in any multispeed or high-speed card slot on the ONS 15454 SDH. If you use the card's 1:N functionality, you must install an E1-N-14 card in Slot 3 (for bank A) or Sot 15 (for bank B).

You can group and map E1-N-14 card traffic in VC-12 as per ITU-T G.707 to any other card in an ONS 15454 SDH node. For performance-monitoring purposes, you can gather bidirectional E-1 frame-level information (loss of frame, parity errors or CRC errors, for example).


Note The lowest level cross-connect is STM-1. Lower level signals, such as E-1, DS-3, or E-3, can be dropped. This may leave part of the bandwidth unused.


E1-N-14 Card-Level Indicators

The E1-N-14 card faceplate has three LEDs.

Table 1 E1-N-14 Card-Level Indicators  

Card-Level LEDs
Description

Red FAIL LED

The red FAIL LED indicates the card's processor is not ready. This LED is lit during Reset. The FAIL LED flashes during the boot process. Replace the card if the FAIL LED persists.

ACT/STBY LED

Green (Active)

Yellow (Standby)

The ACT/STBY LED indicates when the E1-N-14 card is operational and ready to carry traffic (green) or when the card is in standby mode (yellow).

Yellow SF LED

The yellow SF LED indicates a signal failure or condition such as LOS, LOF or high BERs on one or more of the card's ports.


E1-N-14 Port-Level Indicators

You can obtain the status of the fourteen E-1 ports using the LCD screen on the ONS 15454 SDH fan tray assembly. Use the LCD to view the status of any port or card slot; the screen displays the number and severity of alarms for a given port or slot. Refer to Chapter 1, "Alarm Troubleshooting," of the "Cisco ONS 15454 SDH Troubleshooting and Maintenance Guide, R3.3" for a complete description of the alarm messages.

Figure 2 E1-N-14 block diagram

E1-N-14 Specifications

E1-N-14 Input

Bit Rate: 2.048 MBits/s (Mbps) + 50 ppm

Frame Format: unframed, ITU-T G.704 framed

Line Code: HDB-3

Termination: via FMEC-E1 (for 75 ohms unbalanced) or FMEC-DS1/E1 (for 120 ohms balanced)

Input Impedance: 75 ohms unbalanced or 120 ohms balanced

Cable Loss: 0 to 6 dB @ 1024 kHz (for cable length see specification of the cable that you are using)

AIS: ITU-T G.704-compliant

E1-N-14 Output

Bit Rate: 2.048 MBits/s (Mbps) + 50 ppm

Frame Format: unframed, ITU-T G.704 framed

Line Code: HDB-3

Termination: via FMEC-E1 (for 75 ohms unbalanced) or FMEC-DS1/E1 (for 120 ohms balanced)

Output Impedance: 75 ohms unbalanced or 120 ohms balanced

AIS: ITU-T G.704-compliant

Pulse Shape: ITU-T G.703 Fig. 15

Pulse Amplitude: 2.37 V + 5% zero-peak @ 75 ohms, 3 V + 5% zero-peak @ 120 ohms

Loopback Modes: Terminal and Facility

Environmental

Overvoltage Protection: as in ITU-T G.703 Annex B

Operating Temperature: -5 to +45 degrees Celsius

Operating Humidity: 5 - 95%, non-condensing

Power Consumption: 12.60 W, 0.26 A (AMPS) @ -48V, 43.0 BTU/Hr.

Dimensions

Height: 321.3 mm, (12.650 in.)

Width: 18.2 mm, (0.716 in.)

Depth: 228.6 mm, (9.000 in.)

Depth with backplane connector: 235 mm, (9.250 in.)

Weight not including clam shell: 0.8 kg (1.9 lbs.)

Compliance
ONS15454 SDH cards, when installed in a system, comply with these standards:

Safety: IEC 60950, EN 60950, UL 60950, CSA C22.2 No. 60950, TS 001, AS/NZS 3260

Installation Procedures

Use this section if you are installing or removing the E1-N-14 card for the first time. After you become familiar with ONS 15454 SDH card installation and boot up, use this section as a reference.


Caution Always use the supplied electrostatic discharge (ESD) wristband when working with an ONS 15454 SDH. Plug the wristband cable into the ESD jack located on the lower right outside edge of the shelf assembly and ensure the shelf assembly is properly grounded.


Caution Hazardous voltage or energy may be present on the backplane when the system is operating. Use caution when servicing.


Step 1 Open the card ejectors.

Step 2 Carefully insert the card into the guide rails of the desired slot (Figure 3).

Step 3 Push the card into the connector on the back plane by closing the ejectors.


Figure 3 Installing cards in an ONS 15454 SDH

Card Turn Up

Follow the steps in this section to verify card turn up. If one or more of the Cisco Transport Controller (CTC) software screen conditions according to "Verify Successful Turn Up of the E1-N-14 Card" section are not met, re-install the card. Replace the unit if the faulty state persists.

Verify Successful Turn Up of the E1-N-14 Card


Step 1 Verify that power is applied to the shelf assembly.

Step 2 Verify that the E1-N-14 card has been installed in the correct slot.

Step 3 Verify that the card appears in the correct slot on the CTC software screen.

Step 4 Verify that the card is white on the CTC software screen.

Step 5 Verify that the card is shown in Inventory on the CTC software screen.


Removal Procedures

Use this section if you are installing or removing the E1-N-14 card for the first time. After you become familiar with ONS 15454 SDH card installation and boot up, use this section as a reference.


Caution Always use the supplied electrostatic discharge (ESD) wristband when working with an ONS 15454 SDH. Plug the wristband cable into the ESD jack located on the lower right outside edge of the shelf assembly and ensure the shelf assembly is properly grounded.


Caution Hazardous voltage or energy may be present on the backplane when the system is operating. Use caution when servicing.


Note Traffic can be interrupted if you pull an active card from the ONS 15454 SDH. Use caution when replacing cards and verify that only inactive or standby cards are being replaced. If an active card needs to be replaced, follow the procedure to switch the electrical card to standby mode before you pull the card from the node.


Reset an Electrical Card (E1-N-14, DS3iN-12, or E3-12)


Note An electrical card reset can cause a linear 1:1 or 1:N protection switch or an MSSPRing protection switch.


The cards should be replaced when the red FAIL LED appears.

Take these precautions before performing an electical card reset to avoid causing a linear 1:1, 1:N or MSSPRing protection switch:


Step 1 Ensure that the working span is active on the local and remote nodes.

Step 2 Ensure that the working span is carrying error-free traffic without SF alarms.

Step 3 Place a lockout on the protection span before initiating an electrical card reset. In an MSSPRing, place a lockout on the East and West cards of the nodes adjacent to the electrical card switch node; for example, to switch the electrical card on Node B, place the lockout on the West card of Node A and on the East card of Node C. No lockout is necessary on Node B. Before the lockout is set, verify that the MSSPRing is not switched. Traffic can be lost if a lockout is set when the MSSPRing is switched, .

<------East [Node A] West------East [Node B] West------East [Node C] West------>

In a 1:1 protection scheme, place a lockout on the protect card and verify that traffic is traveling over the working span before setting the lockout.


Replace an In-Service Electrical Card (E1-N-14, DS3iN-12, or E3-12)


Step 1 Determine which electical card is active. The active card ACT/STBY LED is green. The standby card ACT/STBY LED is yellow.


Note You can determine whether the card is in active mode or standby mode by viewing it in the CTC software and positioning the cursor over the card graphic to display the status.


Step 2 Switch the active card to standby:

a. In the node view, select the Maintenance > E1-N-14, DS3iN-12 and E3-12 tabs.

b. From the menu, choose Switch.

c. Click Yes on the Confirm Switch dialog box.


Note A minor alarm appears on the manually-switched slot. After the active electrical card goes into standby, the original standby slot becomes active. This causes the former standby card ACT/STBY LED to become green.


Step 3 Pull the new standby card from the ONS 15454 SDH.

Step 4 Insert the replacement card into the empty slot. The replacement card boots up and becomes ready for service after approximately one minute. Release the protection lockout.

Related Documentation

DOC-7813038= Cisco ONS 15454 SDH Installation and Operations Guide

DOC-7813037= Cisco ONS 15454 SDH Troubleshooting and Reference Guide

Obtaining Documentation and Submitting a Service Request

For information on obtaining documentation, submitting a service request, and gathering additional information, see the monthly What's New in Cisco Product Documentation, which also lists all new and revised Cisco technical documentation, at:

http://www.cisco.com/en/US/docs/general/whatsnew/whatsnew.html

Subscribe to the What's New in Cisco Product Documentation as an RSS feed and set content to be delivered directly to your desktop using a reader application. The RSS feeds are a free service. Cisco currently supports RSS Version 2.0.