PVDM4-32 – 32-Channel Voice DSP – Motherboard or T1/E1 NIM Slot

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PVDM4-32 Description

The PVDM4-32 is a Cisco 4000 Series Integrated Services Routers PVDM4 voice DSP module for branch voice gateways and IP media processing. The module provides 32 DSP channels, of which 32 are low-complexity, 24 medium-complexity and 16 high-complexity, and installs in the motherboard slot or on a T1/E1 NIM at 4.85W. Cisco 4000 Series ISRs support it except the ISR 4461, and the 2900 and 3900 ISRs do not accept PVDM4 modules.

Quick Specs

Parameter

Specification

Product ID

PVDM4-32

Product type

PVDM4 voice DSP module

Cisco ordering description

32-channel high-density voice DSP module

Slot type

On-board motherboard or T1/E1 module slot

Supported platform family

Cisco 4000 Series ISRs except ISR 4461 for motherboard PVDM4 support

Low-complexity channels

32

Medium-complexity channels

24

High-complexity channels

16

TDM voice service path

Supported when installed on a T1/E1 NIM

Motherboard service path

IP media services such as conferencing and transcoding

Minimum software listing

IOS XE 3.10 / XE SD-WAN 17.3 / vManage 20.3

Module power

4.85W

Application Scenarios

Small Branch Voice Gateway

A Cisco 4000 Series ISR at a small office uses the motherboard slot for a modest DSP pool that handles occasional conferencing and codec transcoding.

Single T1/E1 Trunk Termination

On a voice T1/E1 NIM, the module supplies the DSP channels that carry a single trunk’s PSTN calls into the IP network.

Product Comparison

Parameter

PVDM4-32

PVDM4-64

PVDM4-128

NIM-PVDM-32

DSP channels

32

64

128

32

Low-complexity channels

32

64

128

32

Medium-complexity channels

24

48

96

24

Slot type

Motherboard or T1/E1 module slot

Motherboard or T1/E1 module slot

Motherboard or T1/E1 module slot

Network Interface Module slot

Supported platforms

Cisco 4000 Series ISRs except ISR 4461

Cisco 4000 Series ISRs except ISR 4461

Cisco 4000 Series ISRs except ISR 4461

Catalyst 8300 and ISR 4461

TDM application support

Supported when installed on a T1/E1 NIM

Supported when installed on a T1/E1 NIM

Supported when installed on a T1/E1 NIM

Not supported

PVDM4-32 is the entry PVDM4 tier: PVDM4-64 lists twice its channels and PVDM4-128 four times, all in the same on-board motherboard or T1/E1 module slot. A site whose call mix exceeds the 32-channel pool moves to PVDM4-64 first, and to PVDM4-128 when the pool must grow fourfold. NIM-PVDM-32 lists the same channel counts but occupies a Network Interface Module slot, serves IP-based voice only and not TDM, and fits Catalyst 8300 and ISR 4461 platforms where PVDM4 does not. A router that needs TDM voice on a T1/E1 NIM calls for PVDM4-32 rather than NIM-PVDM-32.

Ordering Checklist

  • Cisco 4000 ISR hosts: Order for Cisco 4000 Series ISR routers other than the ISR 4461, using the on-board PVDM4 slot. The ISR 4461 is not supported for PVDM4, and 2900 and 3900 ISRs do not accept PVDM4 modules.
  • T1/E1 NIM hosts: Plan an on-board PVDM4 for Multiflex Trunk T1/E1 NIMs such as NIM-xMFT-T1/E1 and NIM-xCE1T1-PRI when voice runs over the NIM. The NIM-PVDM family cannot serve TDM applications.

Specifications

Parameter Specification Parameter Specification
Product ID PVDM4-32 Product type PVDM4 voice DSP module
Cisco ordering description 32-channel high-density voice DSP module Slot type On-board motherboard or T1/E1 module slot
Supported platform family Cisco 4000 Series ISRs except ISR 4461 for motherboard PVDM4 support Low-complexity channels 32
Medium-complexity channels 24 High-complexity channels 16
TDM voice service path Supported when installed on a T1/E1 NIM Motherboard service path IP media services such as conferencing and transcoding
Minimum software listing IOS XE 3.10 / XE SD-WAN 17.3 / vManage 20.3 Voice application licensing Minimum Unified Communications Technology Package noted for voice applications
DSP technology Multicore DSP technology Interface Integrated Services Card slot on motherboard or T1/E1 NIM
Operating temperature 0°C to 50°C (32°F to 122°F) Voltage 3.3V
Input current 1.47A Power 4.85W
Weight 0.08 lb (36 g) Dimensions 0.67 x 2.50 x 2.62 in. (1.7 x 5.1 x 6.7 cm)

Quality Certifications

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    They asked clarifying questions instead of just defaulting to the most expensive option.

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    Anyone weighing the risk of ordering from Layer23 — go for it.

Questions & Answers

  • Which Cisco routers accept PVDM4-32?

    PVDM4-32 fits Cisco 4000 Series ISRs except the ISR 4461. It installs in the on-board motherboard slot or on a T1/E1 NIM, and the 2900 and 3900 ISRs do not accept PVDM4 modules of any channel count.
  • What minimum software does PVDM4-32 need?

    PVDM4-32 is listed from IOS XE 3.10, XE SD-WAN 17.3 and vManage 20.3. Voice applications on the module list the Unified Communications Technology Package as the minimum software license for those applications.
  • What screw torque and standoffs does PVDM4-32 use when installed?

    PVDM4-32 mounts on three standoffs, and its screws are tightened to 6 to 8 in-lb (0.7 to 1.1 Nm). It installs in the ISR 4400 or 4331 motherboard ISC slot, or on the fourth-generation T1/E1 NIM, per the Cisco ISR 4000 hardware installation guide.
  • How do I enable TDM voice on a T1/E1 NIM with PVDM4-32 fitted?

    NIM-based T1/E1 voice requires PVDM4-32 to be installed on the T1/E1 NIM itself. Configure it under voice-card 0/slot with the dsp services dspfarm command, per the Cisco ISR 4000 digital voice configuration guide. The motherboard slot does not serve NIM trunk calls.
  • What input current does PVDM4-32 draw at 3.3V?

    PVDM4-32 draws 1.47A at 3.3V, which gives the 4.85W module power. The load is small, so the module can sit in the motherboard slot or on a T1/E1 NIM without a separate power plan in the router.
  • What are the weight, size and temperature range of PVDM4-32?

    PVDM4-32 weighs 0.08 lb (36 g), measures 0.67 x 2.50 x 2.62 in. (1.7 x 5.1 x 6.7 cm) and operates from 0 to 50 degrees C (32 to 122 degrees F). Keep the router air inside that range in unventilated branch cabinets.

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DataSheet Downloads

  • PVDM4-32 Datasheet