Have an account?

  •   Personalized content
  •   Your products and support

Need an account?

Create an account

Cisco Packet Voice Digital Signal Processor Modules (PVDMs) for Cisco Unified Communications Solutions

Data Sheet

Available Languages

Download Options

  • PDF
    (602.5 KB)
    View with Adobe Reader on a variety of devices
Updated:November 23, 2020

Available Languages

Download Options

  • PDF
    (602.5 KB)
    View with Adobe Reader on a variety of devices
Updated:November 23, 2020
 

 

Product overview

The Cisco® Packet Voice Digital Signal Processor Modules (PVDMs) enable the Cisco Catalyst 8000 Edge Platforms Family and the Cisco 4000 Series Integrated Services Routers (ISRs) to provide rich-media capabilities such as high-density voice connectivity, conferencing, transcoding, media optimization, transrating, and secure voice for Cisco Unified Communications solutions. These new modules support unprecedented scale while allowing for a smaller solution footprint than ever before.

On-Board Motherboard PVDM (PVDM4-X)

Figure 1.            

On-Board Motherboard PVDM (PVDM4-X)

PVDM Enhanced Services Module (SM-X-PVDM)

Figure 2.            

PVDM Enhanced Services Module (SM-X-PVDM)

PVDM Network Interface Module (NIM-PVDM-X)

Figure 3.            

PVDM Network Interface Module (NIM-PVDM-X)

Features and benefits

The PVDMs support digital voice connections, conferencing, universal transcoding, and media optimization services:

      T1/E1 voice: One of the primary uses of PVDMs is to packetize digital voice into IP packets to enable Time-Division Multiplexing (TDM) digital voice applications.

      Conferencing: PVDM modules support ad hoc and meet-me conferencing with various codecs in conjunction with Cisco Unified Communications Manager and Cisco Unified Communications Manager Express.

      Universal transcoding: In conjunction with Cisco IOS® Software, the PVDMs support universal transcoding, which allows conversion from any supported codec to any other supported codec.

      Transrating: The PVDMs support transrating, in which the same codec is repacketized in order to connect dissimilar networks that have different codec packetization periods.

      Voice-quality management: The PVDMs perform compression, voice-activity detection, jitter management, and echo cancellation. The echo cancellation offered in the PVDMs has a tail length of 128 milliseconds and complies with ITU-T G.168.

      Energy savings: The motherboard PVDMs (PVDM4s) offer multiple power-saving modes, including a power-saver mode when the module is not in use. In power-saver mode, each PVDM4 can save up to 5 watts of power.

The analog voice modules (FXS, FXO, and E/M) and Basic Rate Interface (BRI) digital voice modules for the Catalyst 8000 and the 4000 Series ISRs contain built-in, nonconfigurable Digital Signal Processors (DSPs) and do not require any additional PVDMs for voice packetization.

Refer to the PVDM Q&A for commonly asked questions.

Form factor and options

The Cisco PVDMs are available in three form factors with four supported densities in each form factor:

      Motherboard PVDMs (PVDM4) for densities up to 256 channels (Figure 1)

      PVDM enhanced Services Modules (SM-X-PVDM) for densities up to 3080 channels (Figure 2)

      NIM PVDM for densities up to 256 channels (Figure 3)

The motherboard PVDMs are supported on all Cisco 4000 Series ISRs except the ISR 4461. They can be plugged directly into the single slot on the router motherboard or into the Network Interface Module (NIM) that supports T1/E1 ports. A PVDM4 module plugged into the motherboard delivers IP-based voice services such as conferencing, media optimization, and transcoding only.

A PVDM4 module plugged into the T1/E1 NIM would be used for voice T1/E1 connectivity. Any excess channels can be reused toward other IP-based services supported on the motherboard slot. Enhanced DSP architecture accommodates a new packet-processing engine optimized for rich-media voice applications, while concurrently supporting the TDM-IP voice framework.

The PVDM enhanced services modules are supported on all Catalyst 8300s and ISRs that contain an SM-X slot - namely the Cisco 4331, 4351, 4451 and 4461 ISRs.

The PVDM network interface modules are supported on Catalyst 8300s and ISR 4461 all of which contain NIM slots.

The SM-X modules and the NIM PVDM modules support only IP-based voice services and cannot be used for TDM applications.

Table 1 lists the various PVDM options along with their slot requirements.

Table 1.        Cisco PVDM Part Numbers and Slot Requirements

Part Number

Slot

Description

PVDM4-32(=)

On-board motherboard or T1/E1 module slot

32-channel high-density voice DSP module, or spare

PVDM4-64(=)

On-board motherboard or T1/E1 module slot

64-channel high-density voice DSP module, or spare

PVDM4-128(=)

On-board motherboard or T1/E1 module slot

128-channel high-density voice DSP module, or spare

PVDM4-256(=)

On-board motherboard or T1/E1 module slot

256-channel high-density voice DSP module, or spare

SM-X-PVDM-500(=)

Enhanced services module slot

768-channel high-density voice DSP module, or spare

SM-X-PVDM-1000(=)

Enhanced services module slot

1024-channel high-density voice DSP module, or spare

SM-X-PVDM-2000(=)

Enhanced services module slot

2048-channel high-density voice DSP module, or spare

SM-X-PVDM-3000(=)

Enhanced services module slot

3080-channel high-density voice DSP module, or spare

NIM-PVDM-32(=)

Network Interface module slot

NIM PVDM with 32-channel DSP

NIM-PVDM-64(=)

Network Interface module slot

NIM PVDM with 64-channel DSP

NIM-PVDM-128(=)

Network Interface module slot

NIM PVDM with 128-channel DSP

NIM-PVDM-256(=)

Network Interface module slot

NIM PVDM with 256-channel DSP

Codec support and capacity

The PVDM4 modules support a wide range of codecs of different complexities. They support all codecs supported by the Cisco 2800/3800 High-Density PVDMs (PVDM3s). Table 2 lists the codecs supported on the PVDM4 and SM-X-PVDM modules, and Table 3 gives the channel densities of the PVDM4, SM-X-PVDM and NIM-PVDM modules. Table 4 lists the media-enhancement features.

Table 2.        Voice, Fax, and Modem Codec Support on PVDMs

Low-Complexity Codecs

Complexity

Motherboard PVDMs (PVDM4s)

PVDM Enhanced Services Modules (SM-X-PVDMs)

NIM PVDM Modules

Clear channel

Low

Supported

Not applicable

Supported

G.711

Low

Supported

Supported

Supported

Fax and modem pass-through

Low

Supported

Not supported

Supported

G.722

Medium

Supported

Supported

Supported

G.726

Medium

Supported

Not supported

Supported

G.728

High

Supported

Not supported

Supported

G.729

High

Supported

Supported (mapped to G.729a)

Supported

G.729a

Medium

Supported

Supported

Supported

G.729b

High

Supported

Supported (mapped to G.729ab)

Supported

G.729ab

Medium

Supported

Supported

Supported

Fax Relay

Medium

Supported

Not supported

Supported

iLBC (Internet low bit rate codec)

High

Supported

Supported

Supported

iSAC (Internet speech audio codec)

High

Transcoding only

Transcoding only

Transcoding only

AMR-WB

High

Not supported

Not supported

Not supported

Modem relay

High

Supported

Not supported

Supported

Table 3.        Channel Densities of PVDM4, NIM-PVDM-X and SM-X-PVDM Modules

Name

Number of Channels

Low Complexity

Medium Complexity

High Complexity

PVDM4-32

32

24

16

PVDM4-64

64

48

32

PVDM4-128

128

96

64

PVDM4-256

256

192

128

SM-X-PVDM-500

768

384

192

SM-X-PVDM-1000

1024

512

256

SM-X-PVDM-2000

2048

1024

512

SM-X-PVDM-3000

3080

1400

770

NIM-PVDM-32

32

24

16

NIM-PVDM-64

64

48

32

NIM-PVDM-128

128

96

64

NIM-PVDM-256

256

192

128

Table 4.        Media-Enhancement Features

Feature

Motherboard PVDMs (PVDM4s)

PVDM Enhanced Services Modules (SM-X-PVDMs)

NIM PVDM Modules

Echo cancellation

Yes

No

Yes

Tone detection

Yes

Yes

Yes

Noise reduction

Yes

Yes

Yes

Acoustic shock prevention

Yes

Yes

Yes

Gain control

Yes

Yes

Yes

Cisco platform availability and performance

The PVDM4 modules are supported on all Cisco 4000 Series ISRs except the ISR 4461. The platform motherboard has one slot for the PVDM4 module. You can plug any additional PVDM4 modules into the T1/E1 NIMs.

The SM-X-PVDM modules are supported on the Catalyst 8300 and the Cisco 4000 Series ISRs with a SM-X slot. Table 5 provides details on the platform support. Tables 6 and 7 give information on platform performance for transcoding and conferencing, respectively.

The NIM-PVDM-X modules are supported on the Catalyst 8300 and the ISR 4461.

Table 5.        Platform Availability for SM-X-PVDM Modules

4000 Series Platform

SM-X-PVDM-500 (maximum channels)

SM-X-PVDM-1000 (maximum channels)

SM-X-PVDM-2000 (maximum channels)

SM-X-PVDM-3000 (maximum channels)

C8300-1N1S-6T

1 (500)

1 (1000)

1 (2000)

1 (3000)

C8300-1N1S-4T2X

1 (500)

1 (1000)

1 (2000)

1 (3000)

C8300-2N2S-6T

2 (1000)

2 (2000)

1 (2000)

1 (3000)

C8300-2N2S-4T2X

2 (1000)

2 (2000)

2 (4000)

2 (6000)

4321

Not supported

Not supported

Not supported

Not supported

4331

1 (500)

1 (1000)

Not supported

Not supported

4351

2 (1000)

1 (1000)

Not supported

Not supported

4431

Not supported

Not supported

Not supported

Not supported

4451

2 (1000)

2 (2000)

1 (2000)

1 (3000)

4461

3(1500)

3 (3000)

2 (4000)

2 (4000)

All SM-X-PVDM modules require minimum of 8GB RAM

Table 6.        Platform Performance for Transcoding

Platform

Low Complexity to Low Complexity

C8300-1N1S-6T

3336

C8300-1N1S-4T2X

3336

C8300-2N2S-6T

3592

C8300-2N2S-4T2X

6672

4321

768

4331

1024

4351

1280

4431

1024

4451

3336

4461

6160

Table 7.        Platform Performance for Conferencing

Platform

Low Complexity (8-party)

C8300-1N1S-6T

498

C8300-1N1S-4T2X

520

C8300-2N2S-6T

591

C8300-2N2S-4T2X

937

4321

130

4331

220

4351

245

4431

241

4451

502

4461

850

Note that the 4000 Series ISRs do not support the PVDM3 modules, and the 2900 and 3900 Series ISRs do not support the PVDM4, SM-X-PVDM and NIM-PVDM-X modules.

Product specifications

Table 8 gives the specifications for the PVDM4 and SM-X-PVDM modules.

Table 8.        Module Specifications

Feature

Motherboard PVDMs (PVDM4s)

PVDM Enhanced Services Modules (SM-X-PVDMs)

PVDM Network Interface Modules (NIM-PVDM-X)

Components

DSP

Multicore DSP technology

Multicore DSP technology

Multicore DSP technology

Interface

Integrated Services Card (ISC) slot on motherboard or T1/E1 NIM

Enhanced services module (SM-X)

Network Interface module (NIM-PVDM-X)

Features

Operating temperature

32° to 122°F (0° to 50°C)

32° to 104°F (0° to 40°C)

32° to 122°F (0° to 50°C)

Voltage

3.3V

12V

12V

Current

1.47A

4.17A

1.25A

Power

4.85W

50W

15W

Weight

0.08 lb (36 g)

1.78 Ib (808 g)

0.45lb (204 g)

Dimensions (H x W x D)

0.67 x 2.50 x 2.62 in. (1.7 x 5.1 x 6.7 cm)

1.58 x 8.55 x 8.10 in. (4.0 x 21.7 x 20.6 cm)

1.25 x 3.50 x 7.24 in. (3.18 x 8.89 x 18.39 cm)

Regulatory and Compliance

Safety

Complies with:

  IEC 60950 (worldwide)
  AS/NZS 60950-1 (Australia and New Zealand)
   CAN/CSA-C22.2 No. 60950-1, 1 st and 2 nd Ed. (Canada)
  GB4943-95 (People's Republic of China)
  EN60950-1, 1 st and 2 nd Ed. (CENELEC; includes EU and EFTA)
  NOM-019-SCFI-1998 (Mexico)
  UL 60950-1, 1 st and 2 nd Ed. (United States)

Complies with:

  IEC 60950 (worldwide) + A1 and A2
  AS/NZS 60950-1 (Australia and New Zealand)
  CAN/CSA-C22.2 No. 60950-1, 2 nd Ed. (Canada)
  GB4943-95 (People's Republic of China)
  EN60950-1, 2 nd Ed. (CENELEC; includes EU and EFTA) plus Am1 and Am2
  NOM-019-SCFI-1998 (Mexico)
  UL 60950-1, 2 nd Ed. (United States)

Complies with:

IEC 60950-1, 2nd Ed with all group differences and national deviations (worldwide)

  CAN/CSA-C22.2 No. 60950-1-07. (Canada) 
  EN 60950-1, 2 nd Ed. (CENELEC; includes EU and EFTA)
  UL 60950-1, 2 nd Ed. (United States)
  IEC 62368, 2 nd Ed with all group differences and national deviations (worldwide)
  CAN/CSA-C22.2 No. 62368-1-14. (Canada)
  EN 62368-1, 2 nd Ed. (CENELEC; includes EU and EFTA)
  UL 62368-1, 2 nd Ed. (United States)

Homologation

Platform dependent

Platform dependent

Platform dependent

Mean time between failures (MTBF)

System dependent

System dependent

System dependent

EMC

Emissions

  CISPR22, Class B
  EN55022, Class B, CFR47, Part 15, Subpart B, Class B
  CISPR22, Class A
  EN55022, Class A, CFR47, Part 15, Subpart B, Class B
  CISPR32, Class A
  EN55032, Class A, CFR47, Part 15, Subpart B, Class A

Harmonics

EN61000-3-2

EN61000-3-2

EN61000-3-2

Flicker

EN61000-3-3

EN61000-3-3

EN61000-3-3

Immunity

  CISPR24
  EN 55024
  EN50082-1
  CISPR24
  EN 55024
  EN50082-1
  CISPR24
  EN 55024
  EN61000-6-1

Electrostatic discharge (ESD)

EN 61000-4-2

EN 61000-4-2

EN 61000-4-2

RF fields

EN 61000-4-3

EN 61000-4-3

EN 61000-4-3

EFT

EN 61000-4-4

EN 61000-4-4

EN 61000-4-4

Surge

EN 61000-4-5

EN 61000-4-5

EN 61000-4-5

Conducted RF

EN 61000-4-6

EN 61000-4-6

EN 61000-4-6

Power-frequency magnetic fields

EN 6100-4-8

EN 6100-4-8

EN 6100-4-8

Voltage dips, sags, and interruptions

EN 61000-4-11

EN 61000-4-11

EN 61000-4-11

Ordering information

To place an order, visit the Cisco Ordering Home Page and refer to Table 1. To download software, visit the Cisco Software Center.

Cisco environmental sustainability

Information about Cisco’s environmental sustainability policies and initiatives for our products, solutions, operations, and extended operations or supply chain is provided in the “Environment Sustainability” section of Cisco’s Corporate Social Responsibility (CSR) Report.

Reference links to information about key environmental sustainability topics (mentioned in the “Environment Sustainability” section of the CSR Report) are provided in the following table:

Sustainability topic

Reference

Information on product material content laws and regulations

Materials

Information on electronic waste laws and regulations, including products, batteries, and packaging

WEEE compliance

Cisco makes the packaging data available for informational purposes only. It may not reflect the most current legal developments, and Cisco does not represent, warrant, or guarantee that it is complete, accurate, or up to date. This information is subject to change without notice.

Cisco and partner services for the branch office

Services from Cisco and our certified partners can help you transform the branch-office experience and accelerate business innovation and growth. We have the depth and breadth of expertise to create a clear, replicable, optimized branch-office footprint across technologies. Planning and design services align technology with business goals and can increase the accuracy, speed, and efficiency of deployment. Technical services help improve operational efficiency, save money, and mitigate risk. Optimization services are designed to continuously improve performance and help your team succeed with new technologies.

Cisco Capital

Flexible payment solutions to help you achieve your objectives

Cisco Capital makes it easier to get the right technology to achieve your objectives, enable business transformation and help you stay competitive. We can help you reduce the total cost of ownership, conserve capital, and accelerate growth. In more than 100 countries, our flexible payment solutions can help you acquire hardware, software, services and complementary third-party equipment in easy, predictable payments. Learn more.

Learn more