DSP Requirements
Media Resource Number of DSPs
Voice termination for up to 23 G.711 calls 2 C5510
Transcoding for up to 8 G.729a sessions 1 C5510
4 conference bridges, each with up to 8 participants 2 C5510
106 Authorized Self-Study Guide: Cisco Voice over IP (CVOICE)
7 Calculate required DSPs/PVDMs. Sample Cisco IOS configuration
Note The calculator displays two results: Optimized Result and Normal Result. The
optimized result uses the C5510s in flex mode, and the normal result uses either medium
or high complexity mode, depending on the used codecs. You should use flex-mode
because of higher performance and fewer required DSP resources. In rare cases, this might
lead to oversubscribed DSP resources.
Also, notice the CLI Info link in Figure 2-18. Clicking this link provides a template of the
Cisco IOS configuration to be applied to the router to support the DSP media resources.