PVDM2-64 Cisco 64-Channel Packet Fax/Voice DSP Module

The PVDM2-64 is a Cisco 64-channel packet fax and voice DSP module for Cisco integrated services routers and high-density digital voice network modules. Sixty-four channels is the maximum density with the G.711 codec. With high-complexity codecs it handles up to 24 channels, and with medium-complexity codecs up to 32 channels.

High-complexity codecs are G.723.1, G.728, G.729, G.729b, iLBC and Modem Relay. Medium-complexity codecs include G.729a, G.729ab, G.726, G.722 and Fax Relay. The module uses Texas Instruments TNETV2510GGW DSPs running at 200 MHz, each with 128-megabit synchronous DRAM, and plugs into an 80-pin SIMM slot. It can be inserted and removed in the field.

Echo cancellation is done in software, complies with ITU-T G.168 and covers a 64 ms tail. Cisco IOS Software Release 12.3(7)T is the first release for the NM-HDV2 network modules, and 12.3(8)T4 for the 2800 routers.

The PVDM2-64 works in the NM-HDV2, NM-HDV2-1T1/E1 and NM-HDV2-2T1/E1 network modules, in Cisco 2801, 2811, 2821 and 2851 routers and in Cisco 3825 and 3845 routers. It also fits the EVM-HD-8FXS/DID, EM-HDA-8FXS and EM-4BRI-NT/TE modules. On Cisco 2911, 2921, 2951, 3925 and 3945 routers it goes through the PVDM2-ADPTR adapter. Cisco orders it as PVDM2-64, or as the spare PVDM2-64=.

Smaller modules in the family include the 48-channel PVDM2-48 and the 32-channel PVDM2-32. The Cisco interface card category holds the other voice DSP modules.

Related: Cisco 3800 Series router parts