128-channel high-density voice and video DSP module - PVDM4-128

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, translating, and secure voice for Cisco Unified Communications solutions. These new modules support unprecedented scale while allowing for a smaller solution footprint than ever before.

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.
• ● Translating: The PVDMs support translating, in which the same codec is repacketized in order to connect dissimilar networks that have different codec pectization 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, non-configurable digital signal processors (DSPs) and do not require any additional PVDMs for voice pectization.

  Quick Specs

  Figure 1 shows the appearance of PVDM4-128.

  

  Table 1 shows the Quick Specs.

  Product Code	PVDM4-128
  Slot	On-board motherboard or T1/E1 module slot
  Description	128-channel high-density voice DSP module
  Low Complexity	128
  Medium Complexity	96
  High Complexity	64

  Compare to Similar Items

  Table 2 shows the comparison of PVDM4-64, PVDM4-32 and PVDM4-128.

  Product Code	PVDM4-64	PVDM4-32	PVDM4-128
  Slot	On-board motherboard or T1/E1 module slot	On-board motherboard or T1/E1 module slot	On-board motherboard or T1/E1 module slot
  Description	64-channel high-density voice DSP module	32-channel high-density voice DSP module	128-channel high-density voice DSP module
  Low Complexity	64	32	128
  Medium Complexity	48	24	96
  High Complexity	32	16	64

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