It is the biggest challenge for an integrated system to eliminate performance bottlenecks. None of the prior integrated routers in the industry can well address this fatal weakness: Multiple services share the processor and bus. As a result, a number of features operating at the same time will deteriorate the performance of the integrated equipment. Based on the innovative N-Bus design, the MSR ideally incorporates the distributed processing feature usually found only in high-end devices into medium- and low-end devices. A wide array of data streams including WAN routing, LAN switching, voice, security and advanced services are separately transmitted via different buses with each service separately processed by a special-purpose co-processing engine concurrently, eliminating the bus and CPU performance bottleneck, and supporting concurrent wire-speed transmission and perfect integration of multiple services.

The following examples explain how each kind of service is processed and forwarded in the system:

1. WAN data security services: WAN data services are transmitted between WAN modules. Starting from the WAN module, the data first goes to the hardware encryption engine via the system data bus for high performance encryption, and then reaches the CPU via the system data bus for forwarding. Finally, the data is sent out from another data module or an interface that comes with the main equipment.
2. LAN switching services: LAN data services are handled mostly at the LAN switching module. The data first goes to the engine used exclusively for data switching via the internal switching bus. After LAN processing, the data is forwarded out of the internal switching bus.
3. Voice services:

TDM voice applications: Local TDM switching voice services are transmitted between voice interfaces. The MSR can support carrier-class voice services of the same quality as PBX. The voice signal reaches the voice co-processing engine via the voice switching bus for TDM processing, and then is forwarded from another voice interface via the voice switching bus. The MSR can process signals without eating into any CPU resources. Additionally, it eliminates the need to encapsulate signals into IP packets. Instead, all the signals are effectively and quickly processed by local hardware.
VoIP voice applications: VoIP voice services are transmitted between the voice interface and data interface. Voice signals arrive at the voice encoding/decoding engine via the voice switching bus for encoding/decoding. Then, these signals are encapsulated into IP packets, and transmitted to the CPU via the system data bus for data encryption and forwarding. Finally, they are carried over the WAN in the form of IP packets.

4. Advanced, deep and customized services:
Advanced service are mostly delivered on the OAA (open service platform). The system sets aside an internal service bus for the OAA to exchange information with the route switching system. Unlike prior network cable connection between the server and router, the MSR provides an internal data bus for transmission. This helps improve the efficiency in service processing and seamlessly integrate advanced services into network devices. Thus, the MSR is free from incompatibility between network devices and the traffic server.