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Cisco 4000 Series Integrated Services Routers

Cisco 4000 Series Integrated Services Router Packet Voice Digital Signal Processor Modules (PVDMs) for Cisco Unified Communications Solutions Data Sheet

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Product Overview

The Cisco® Packet Voice Digital Signal Processor Modules (PVDMs) enable 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.

Figure 1.      On-Board Motherboard PVDM (PVDM4) Top View

Figure 2.      PVDM Enhanced Services Module (SM-X-PVDM)

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 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

Cisco 4000 Series PVDMs are available in two 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)

The motherboard PVDMs are supported on all Cisco 4000 Series ISRs. 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 ISRs that contain an SM-X slot - namely the Cisco 4331, 4351, and 4451 ISRs. The SM-X 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 4000 Series ISR 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

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 and SM-X-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)

Clear channel

Low

Supported

Not applicable

G.711

Low

Supported

Supported

Fax and modem pass-through

Low

Supported

Not supported

G.722

Medium

Supported

Supported

G.726

Medium

Supported

Not supported

G.728

High

Supported

Not supported

G.729

High

Supported

Supported (mapped to G.729a)

G.729a

Medium

Supported

Supported

G.729b

High

Supported

Supported (mapped to G.729ab)

G.729ab

Medium

Supported

Supported

Fax Relay

Medium

Supported

Not supported

iLBC (Internet low bit rate codec)

High

Supported

Supported

iSAC (Internet speech audio codec)

High

Transcoding only

Transcoding only

AMR-WB

High

Supported

Not supported

Modem relay

High

Supported

Not supported

Table 3.       Channel Densities of PVDM4 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

Table 4.       Media-Enhancement Features

Feature

Motherboard PVDMs (PVDM4s)

PVDM Enhanced Services Modules (SM-X-PVDMs)

Echo cancellation

Yes

No

Tone detection

Yes

Yes

Noise reduction

Yes

Yes

Acoustic shock prevention

Yes

Yes

Gain control

Yes

Yes

Cisco Platform Availability and Performance

The PVDM4 modules are supported on all Cisco 4000 Series ISRs. 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 Cisco 4000 Series ISRs with an 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.

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)

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)

Table 6.       Platform Performance for Transcoding

4000 Series Platform

Low Complexity to Low Complexity

Low Complexity to Medium Complexity

Low Complexity to High Complexity

4331

750

380

190

4351

1000

510

255

4451

3050

1400

765

Table 7.       Platform Performance for Conferencing

4000 Series Platform

Low Complexity (8-party)

High Complexity (8-party)

4331

700

210

4351

255

63

4451

 190

48

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

Components

DSP

Multicore DSP technology

Multicore CPU technology

Interface

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

Enhanced services module (SM-X)

Features

Operating temperature

32° to 122°F (0° to 50°C)

32° to 104°F (0° to 40°C)

Voltage

3.3V

12V

Current

1.47A

4.17A

Power

4.85W

50W

Weight

0.08 lb (36 g)

1.78 Ib (808 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)

Regulatory and Compliance

Safety

Complies with:

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

Homologation

Platform dependent

Platform dependent

Mean time between failures (MTBF)

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

Harmonics

EN61000-3-2

EN61000-3-2

Flicker

EN61000-3-3

EN61000-3-3

Immunity

  CISPR24
  EN 55024
  EN50082-1
  CISPR24
  EN 55024
  EN50082-1

Electrostatic discharge (ESD)

EN 61000-4-2

EN 61000-4-2

RF fields

EN 61000-4-3

EN 61000-4-3

EFT

EN 61000-4-4

EN 61000-4-4

Surge

EN 61000-4-5

EN 61000-4-5

Conducted RF

EN 61000-4-6

EN 61000-4-6

Power-frequency magnetic fields

EN 6100-4-8

EN 6100-4-8

Voltage dips, sags, and interruptions

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.

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