Cisco IOS

The software available for the Cisco MWR 1941-DC-A supports Cisco IOS Software running on the MIPS RISC processor, and microcode running on the optional Cisco AIM network processor to provide hardware-acceleration to increase performance of ATM network services such as ATM cell segmentation and reassembly (SAR), ATM AAL0 (for AAL2 voice/data), AAL5, and IMA v1.0 and v1.1.

The software for the Cisco MWR 1941-DC-A is tailored for IP RAN transport, and includes several Cisco IOS Software features specifically developed for such applications. These features include Cisco patent-pending Optimized Pseudowire Emulation (PWE), or GSM Abis/Ater and UMTS Iub Optimization over IP, which provides optimization to improve backhaul transport efficiency. Another important feature is Cisco ATM PVC Routing, which provides the ability to route different types of3G traffic over different types of backhaul media, while providing load-balancing and backup paths. For example, in some DSL backhaul networks the downlink supports much higher capacity than the uplink. Cisco ATM PVC Routing optimally matches HSDPA transport to these asymmetric backhaul networks by routing higher-bandwidth downstream traffic over DSL links, while the lower-bandwidth upstream traffic is routed over "bonded" T1/E1 links. In addition, the software supports Cisco patented redundancy and failover logic, diagnostics functions, and relay control enabling inter-router T1/E1 protection switching, which provides 99.9998 percent availability using the Cisco T1/E1 Protection Switching VWICs (product codes: VWIC-2T1/E1-RAN, VWIC-2MFT-T1-DIR, and VWIC-2MFT-E1-DIR).