- PVDM3-128语音条
- 思科 Cisco语音条PVDM3-128 路由器专用 思科 2900 和 3900 系列平台都支持 PVDM3。PVDM3 提供了比 PVDM2 更高的密度和更加强大的处理能力，因此可以支持添加新的多媒体应用。增强的 DSP 体系结构提供了一个全新的数据包处理引擎，该引擎专门针对多媒体话音和视频应用进行了优化，同时还支持 PVDM2 所使用的时分多路 IP (TDM-IP) 话音框架。即时升级功能
您可以从 PVDM3 模块产品组合中选择不同通道数量的 DSP 模块，可供选择的范围是 16 到 256 个 G.711 通道。PVDM3 模块全部采用相同的规格，适用于思科 2900 和 3900 系列集成多业务路由器。即时升级功能可以帮助您轻松地扩展话音部署。
此外，与 PVDM2 上的 DSP 相比，PVDM3 上的 DSP 提供了更加强大的处理能力和更充足的内存。高性能 PVDM3 提供的简易镜像升级功能为未来话音和视频的增加提供了支持，用户不再需要对系统进行全方位的升级。PVDM3 模块不仅可以满足企业当今的需求，还能适应企业未来的发展。
广泛的编解码器支持PVDM3 模块支持各种复杂程度的编解码器。它们支持 PVDM2 能支持的所有编解码器。
The PVDM3 provides higher density and more processing power than the PVDM2, making the addition of rich-media applications possible. Enhanced DSP architecture accommodates a packet-processing engine optimized for rich-media voice and video applications, while concurrently supporting the time-pision multiplexing IP (TDM-IP) voice framework used by the PVDM2.
The PVDM3 module portfolio has up to 4 times higher density than those in the PVDM2 portfolio. In addition, the PVDM3 modules provide better density for medium- and high-complexity codecs than their equivalent PVDM2 peers. For example, the number of supported medium-complexity codec on a PVDM3-64 is 42, versus 32 on a PVDM2-64.
PRODUCT FEATURES
High density and flexibility
The PVDM3 module portfolio has up to 4 times higher density than those in the PVDM2 portfolio. In addition, the PVDM3 modules provide better density for medium- and high-complexity codecs than their equivalent PVDM2 peers. For example, the number of supported medium-complexity codec on a PVDM3-64 is 42, versus 32 on a PVDM2-64.
Voice-quality management
The PVDM3 modules perform compression, voice-activity-detection, jitter-management, and echo-cancellation functions. The echo cancellation offered in the PVDM3 modules has a tail length of 128 milliseconds (ms) and complies with ITU-T G.168.
Energy-saving feature
The PVDM3 DSPs offer multiple power-saving modes, including a power-saver mode when the module is not in use. In power-saver mode each PVDM3 can save up to 5 watts of power.
PRODUCT DETAILS
Device Type Voice DSP module
Form Factor Plug-in module
Interface (Bus) Type DIMM 240-pin
Bus Voltage 3.3 V
RAM 512 MB
Compliant Standards G.711, G.729a, G.729ab, G.726, G.722, G.728, G.729, G.729b
Designed For Cisco 2901, 2911, 2921, 2951, 3925, 3925E, 3945, 3945E
