[shortdesc] Voice DSP module for Cisco 4451-X [/shortdesc] [properties] Properties Cisco PVDM4-256 Description 256-channel high-density voice DSP module Product Family Cisco PVDM4 Series Product Type Digital Signal Processor Module Supported Devices Cisco 4000 Series ISRs (except ISR 4461) Channels Supported 256 (Low), 192 (Medium), 128 (High complexity) Form Factor On-board motherboard or T1/E1 module slot Connectivity Technology Wired Mean Time Between FailuresMTBF (hours) System dependent [/properties] [specifications] Specifications PVDM4-256 DSP Technology Multicore DSP Interface Integrated Services Card (ISC) slot on motherboard or T1/E1 NIM Supported Channels 256 (Low Complexity), 192 (Medium), 128 (High) Operating Temperature 32° to 122°F (0° to 50°C) Voltage 3.3V Current 1.47A Power 4.85W (typical) Dimensions (H x W x D) 0.67 x 2.50 x 2.62 in. (1.7 x 5.1 x 6.7 cm) Weight 0.08 lb (36 g) Supported Codecs G.711, G.722, G.726, G.728, G.729, G.729a, G.729b, G.729ab, iLBC, Fax relay, Modem relay, iSAC (transcoding only) Media Enhancement Features Echo cancellation (G.168, 128ms), Tone detection, Noise reduction, Gain control, Acoustic shock prevention Compliance & Safety UL 60950-1, IEC 60950-1, EN 60950-1, CAN/CSA-C22.2 No. 60950-1, NOM-019-SCFI-1998 EMC Certifications CISPR22 Class B, EN55022, EN61000-3-2, EN61000-3-3, EN 55024, EN 61000-4 series [/specifications] [accesories] Compatible Accessories SM-X-PVDM-500= 768-channel Enhanced DSP Module SM-X-PVDM-1000= 1024-channel Enhanced DSP Module SM-X-PVDM-2000= 2048-channel Enhanced DSP Module SM-X-PVDM-3000= 3080-channel Enhanced DSP Module [/accesories] Cisco PVDM4-256 Expansion Module The PVDM4 modules are supported on the Cisco 4451-X platform. You can plug them directly into the single slot on the router motherboard or onto the network interface module (NIM) that supports T1/E1 ports. Enhanced DSP architecture accommodates a packet-processing engine optimized for rich-media voice applications, while concurrently supporting the time-division multiplexing IP (TDM-IP) voice framework. A PVDM4 module plugged onto the motherboard delivers IP-based voice services such as conferencing, media optimization, and transcoding. A PVDM4 module plugged onto the NIM daughter card would be used for voice T1/E1 connectivity. All the PVDM4 modules have the same form factor and are field-upgradable to allow you to easily scale your voice deployments.