Contents

• Installing the Cisco PVDM4
• Overview
• Codec Support
• Recommended Practices for the Cisco PVDM4
• Safety Recommendations
• Preventing Electrostatic Discharge Damage
• General Maintenance Guidelines for Installing Cisco PVDM4s
• Safety Warnings
• Installing and Removing the Cisco PVDM4
• Tools and Equipment Required During Installation
• PVDM4 Location and Orientation
• Installing the Cisco PVDM4 on the Motherboard of the Cisco 4451-X Integrated Services Router
• Removing the PVDM4 from the Motherboard of the Cisco 4451-X Integrated Services Router
• Installing the PVDM4 on the Cisco Fourth-Generation T1/E1 Voice and WAN Network Interface Module in the Cisco 4451-X Integrated Services Router
• Removing the PVDM4 from the Cisco Fourth-Generation T1/E1 Voice and WAN Network Interface Module in the Cisco 4451-X Integrated Services Router
• Related Documents

Installing the Cisco PVDM4

---

First Published: June 24, 2013Part Number: OL-28915-01

This document provides information that you should know before and during the installation of the Cisco Packet Voice DSP Module, version 4 (PVDM 4). This document contains the following sections:

Overview

The Cisco PVDM4 expands the capabilities of the Cisco 4451-X Integrated Services Router to provide voice and data support. The Cisco PVDM4 is installed on a slot on the motherboard or on Cisco Fourth-Generation T1/E1 Voice and WAN Network Interface Module.

Codec Support

Codec complexity describes the amount of processing power required to perform codec compression algorithm. Codec complexity affects the number of voice channels that is supported on the DSP module.

The following table lists the channel density support for different complexities for the different Cisco PVDM4 modules.

Table 1 Channel Density for PVDM4

Name	Description	Number of Channels
		Low Complexity	Medium Complexity	High Complexity
PVDM4-32	32-channel voice DSP module	32	24	16
PVDM4-64	64-channel voice DSP module	64	48	32
PVDM4-128	128-channel voice DSP module	128	96	64
PVDM4-256	256-channel voice DSP module	256	192	128

The following table list the codecs that are supported on the PVDM4 and the level of complexity.

Table 2 Supported Codec

Low-Complexity Codecs	Medium-Complexity Codecs	High-Complexity Codecs
G.711 Supports clear-channel, and fax and modem pass-through	Fax relay, G.722, G.726, G.729a, and G.729ab.	G.728, G.729, G.729b, Internet Low Bitrate Codec (iLBC), and modem relay

The Cisco PVDM4 enhances the Cisco 4451-X Integrated Services Router by providing it with Unified Communications and Collaboration infrastructure capabilities.

Recommended Practices for the Cisco PVDM4

This section describes recommended practices for safe and effective installation of the hardware described in this document.

Safety warnings included in this section apply to all Cisco PVDM4s that are used on Cisco 4451-X Integrated Services Router.

Safety Recommendations

To prevent hazardous conditions, follow these safety recommendations while working with this equipment:

• Keep tools away from walk areas where you or others could fall over them.
• Do not wear loose clothing around the router. Fasten your tie or scarf and roll up your sleeves to prevent clothing from being caught in the chassis.
• Wear safety glasses when working under any conditions that might be hazardous to your eyes.
• Locate the emergency power-off switch in the room before you start working. If an electrical accident occurs, shut the power off.
• Before working on the router, turn off the power and unplug the power cord.
• Disconnect all power sources before doing the following:
  • Installing or removing a router chassis
  • Working near power supplies
• Do not work alone if potentially hazardous conditions exist.
• Always check that power is disconnected from a circuit.
• Remove possible hazards from your work area, such as damp floors, ungrounded power extension cables, or missing safety grounds.
• If an electrical accident occurs, proceed as follows:
  • Use caution; do not become a victim yourself.
  • Turn off power to the room using the emergency power-off switch.
  • Determine the condition of the viction and send another person to get medical aid or call for help.
  • Determine if the person needs rescue breathing or external cardiac compressions; then take appropriate action.

Preventing Electrostatic Discharge Damage

Electrostatic discharge can damage equipment and electrical circuitry. Electrostatic discharge occurs when electronic printed circuit cards, such as those used in Cisco service modules and network modules, are improperly handled and can result in complete or intermittent equipment failure. Always observe the following electrostatic discharge damage (ESD) prevention procedures when installing, removing, and replacing any electronic printed circuit cards:

• Make sure that the router chassis is electrically connected to earth ground.
• Wear an ESD-preventive wrist strap, and make sure that it makes good contact with your skin.
• Connect the wrist strap clip to an unpainted portion of the chassis frame to channel unwanted ESD voltages to ground.

Caution

The wrist strap and clip must be used correctly to ensure proper ESD protection. Periodically confirm that the resistance value of the ESD-preventive wrist strap is between 1 and 10 megohms (Mohm).

• If no wrist strap is available, ground yourself by touching the metal part of the router chassis.

General Maintenance Guidelines for Installing Cisco PVDM4s

• Keep the router chassis area clear and dust-free during and after installation.
• If you remove the chassis cover for any reason, store it in a safe place.
• Do not perform any action that creates a hazard to people or makes equipment unsafe.
• Keep walk areas clear to prevent falls or damage to equipment.
• Follow installation and maintenance procedures as documented by Cisco Systems, Inc.

Safety Warnings

The following safety warning statements apply to all hardware procedures involving the Cisco Cisco PVDM4 for Cisco 4451-X Integrated Services Router. Translations of these warnings are available in the Cisco Network Modules and Interface Cards Regulatory Compliance and Safety Information document, which ships with all individual Cisco Cisco PVDM4 orders and is also available online.

DANGER

IMPORTANT SAFETY INSTRUCTIONSThis warning symbol means danger. You are in a situation that could cause bodily injury. Before you work on any equipment, be aware of the hazards involved with electrical circuitry and be familiar with standard practices for preventing accidents. Use the statement number provided at the end of each warning to locate its translation in the translated safety warnings that accompanied this device. Statement 1071SAVE THESE INSTRUCTIONS

DANGER

Read the installation instructions before connecting the system to the power source. Statement 1004

DANGER

This unit might have more than one power supply connection. All connections must be removed to de-energize the unit. Statement 1028

DANGER

Only trained and qualified personnel should be allowed to install, replace, or service this equipment. Statement 1030

DANGER

Do not use this product near water; for example, near a bath tub, wash bowl, kitchen sink or laundry tub, in a wet basement, or near a swimming pool. Statement 1035

DANGER

Never install telephone jacks in wet locations unless the jack is specifically designed for wet locations. Statement 1036

DANGER

Never touch uninsulated telephone wires or terminals unless the telephone line has been disconnected at the network interface. Statement 1037

DANGER

Avoid using a telephone (other than a cordless type) during an electrical storm. There may be a remote risk of electric shock from lightning. Statement 1038

DANGER

To report a gas leak, do not use a telephone in the vicinity of the leak. Statement 1039

DANGER

Ultimate disposal of this product should be handled according to all national laws and regulations. Statement 1040

DANGER

When installing or replacing the unit, the ground connection must always be made first and disconnected last. Statement 1046

The following warnings apply in Australia:

DANGER

This equipment will be inoperable when mains power fails. Statement 198

DANGER

Incorrect connection of this or connected equipment to a general purpose outlet could result in a hazardous situation. Statement 212

DANGER

Because invisible laser radiation may be emitted from the aperture of the port when no fiber cable is connected, avoid exposure to laser radiation and do not stare into open apertures. Statement 125

DANGER

Do not work on the system or connect or disconnect cables during periods of lightning activity. Statement 1001

DANGER

To avoid electric shock, do not connect safety extra-low voltage (SELV) circuits to telephone-network voltage (TNV) circuits. LAN ports contain SELV circuits, and WAN ports contain TNV circuits. Both LAN and WAN ports may use RJ-45 connectors. Use caution when connecting cables. Statement 1021

DANGER

Hazardous network voltages are present in WAN ports regardless of whether power to the router is OFF or ON. To avoid electric shock, use caution when working near WAN ports. When detaching cables, detach the end away from the router first. Statement 1026

DANGER

Before opening the chassis, disconnect the telephone-network cables to avoid contact with telephone-network voltages. Statement 1041

DANGER

The telecommunications lines must be disconnected 1) before unplugging the main power connector and/or 2) while the housing is open. Statement 1043

Installing and Removing the Cisco PVDM4

This section describes the following installationand removal tasks for the Cisco PVDM4 used on the Cisco 4451-X Integrated Services Routers.

• Tools and Equipment Required During Installation
• Installing the Cisco PVDM4 on the Motherboard of the Cisco 4451-X Integrated Services Router
• Removing the PVDM4 from the Motherboard of the Cisco 4451-X Integrated Services Router
• Installing the PVDM4 on the Cisco Fourth-Generation T1/​E1 Voice and WAN Network Interface Module in the Cisco 4451-X Integrated Services Router
• Removing the PVDM4 from the Cisco Fourth-Generation T1/​E1 Voice and WAN Network Interface Module in the Cisco 4451-X Integrated Services Router

Tools and Equipment Required During Installation

You will need the following tools and equipment while working with the Cisco PVDM4:

• Number 2 phillips screwdriverr
• ESD-preventive wrist strap
• (For routers using DC power) Tape to secure DC circuit breaker handle

PVDM4 Location and Orientation

The PVDM4 connector is located on the motherboard. The following figure shows the PVDM4, screws, and connector. The connector on the PVDM4 must align with the corresponding connector on the motherboard.

Screws

Connector

1	Screws	2	Connector
3	PVDM4

Installing the Cisco PVDM4 on the Motherboard of the Cisco 4451-X Integrated Services Router

Caution

When you remove or install the Cisco PVDM4, always wear an ESD-preventive wrist strap, and ensure that it makes good contact with your skin. Connect the equipment end of the wrist strap to the metal part of the chassis.

Caution

Handle the Cisco PVDM4 by the edges only. Cisco PVDM4 are ESD-sensitive components and can be damaged by mishandling.

DANGER

No user-serviceable parts inside. Do not open. Statement 1073

DANGER

Only trained and qualified personnel should be allowed to install, replace, or service this equipment. Statement 1030

Procedure

---

Step 1	Read the Safety Warnings and disconnect the power supply before you perform any module replacement.
Step 2	Turn off electrical power to the router. Leave the power cable plugged in to channel ESD voltages to ground.
Step 3	Remove the cover. See the “Installing and Upgrading Internal Modules and FRUs” chapter of the Hardware Installation Guide for the Cisco 4451-X Integrated Services Router.
Step 4	Identify the PVDM4 slot and the three standoffs on the router’s main motherboard.
Step 5	Insert the Cisco PVDM4 into the motherboard. Note    Be sure to press firmly on the PVDM4 until the board seats onto the connector.
Step 6	Insert the screws from the accessory kit through the Cisco PVDM4 into the standoffs. Carefully tighten the screws with a Phillips screwdriver (torque 6 to 8 in-lb. or 0.7 to 1.1 Nm).
Step 7	Check that the Cisco PVDM4 is installed correctly on the system board.
Step 8	Replace the cover. See the “Installing and Upgrading Internal Modules and FRUs” chapter of the Hardware Installation Guide for the Cisco 4451-X Integrated Services Router.

---

Removing the PVDM4 from the Motherboard of the Cisco 4451-X Integrated Services Router

Procedure

---

Step 1	Turn off electrical power to the router. Leave the power cable plugged in to channel ESD voltages to ground. Remove the cover. See the “Installing and Upgrading Internal Modules and FRUs” chapter of the Hardware Installation Guide for the Cisco 4451-X Integrated Services Router.
Step 2	Locate the PVDM4 on the motherboard. See the below figure. Figure 1. Location of the PVDM4 on the Motherboard 1 Screws 2 PVDM4 3 Connector 4 Standoffs
Step 3	Loosen and remove the three screws on the PVDM4.
Step 4	Lift the PVDM4 up from the motherboard.
Step 5	Place the PVDM4 in an anti-static bag.
Step 6	Replace the cover. See the “Installing and Upgrading Internal Modules and FRUs” chapter of the Hardware Installation Guide for the Cisco 4451-X Integrated Services Router.

---

Installing the PVDM4 on the Cisco Fourth-Generation T1/E1 Voice and WAN Network Interface Module in the Cisco 4451-X Integrated Services Router

Procedure

---

Step 1	Shut down the electrical power to the slot in the router either by turning off the electrical power to the router or by issuing the online insertion and removal (OIR) commands. Leave the power cable plugged in to channel ESD voltages to ground. For more information on OIR, see the “Managing Cisco Enhanced Services and Network Interface Modules” chapter in the Software Configuration Guide for the Cisco 4451-X Integrated Services Router.
Step 2	Loosen the two captive screws on the network interface module.
Step 3	Remove the network interface module. (See the below figure.) 1 Captive Screws 2 Ports 3 Network Card 4 PVDM4
Step 4	Locate the three standoffs on the heatsink on the network interface module. .
Step 5	Align the PVDM4 with the connector and the standoffs and attach the PVDM4 with the three screws that is provided with the PVDM4 module.
Step 6	Slide the network interface module back in the router and tighten the captive screws.

---

Removing the PVDM4 from the Cisco Fourth-Generation T1/E1 Voice and WAN Network Interface Module in the Cisco 4451-X Integrated Services Router

Procedure

---

Step 1	Shut down the electrical power to the slot in the router either by turning off the electrical power to the router or by issuing the online insertion and removal (OIR) commands. Leave the power cable plugged in to channel ESD voltages to ground. For more information on OIR, see the “Managing Cisco Enhanced Services and Network Interface Modules” chapter in the Software Configuration Guide for the Cisco 4451-X Integrated Services Router.
Step 2	Loosen the two captive screws on the network interface module.
Step 3	Remove the network interface module with the PVDM4.
Step 4	Loosen the three screws and standoffs on the PVDM4.
Step 5	Lift the PVDM4 up from the network interface module.
Step 6	Place the PVDM4 in an anti-static bag.
Step 7	If you are not immediately replacing the network module, install the blank cover over the empty network module slot.
Step 8	Slide the network interface module back in the router and tighten the captive screws.

---

Related Documents

Related Topic	Document Title
Information about configuring the PVDM4	Configuring Cisco Fourth-Generation T1/​E1 Voice and WAN Network Interface Modules
Information about installing Cisco Fourth-Generation T1/E1 Voice and WAN Network Interface Module	Installing the Cisco Fourth-Generation T1/​E1 Voice and WAN Network Interface Module
Information on the Cisco 4451-X Integrated Services Routers	Hardware Installation Guide for the Cisco 4451-X Integrated Services Router
Information on configuring Cisco 4451-X Integrated Services Routers	Software Configuration Guide for the Cisco 4451-X Integrated Services Router
Comprehensive command reference information for Cisco IOS voice commands	Cisco IOS Voice Command Reference
Configuration guides for different voice and video applications, H.332 networks, SIP devices, and Cisco Voice Gateway Routers.	Cisco Unified Border Element Configuration Guide Library, Cisco IOS XE Release 3S
Regulatory compliance and safety information	Cisco Network Modules and Interface CardsC Regulatory Compliance and Safety Information

Configuration guide

Copyright © 2016, Cisco Systems, Inc. All rights reserved.