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Chassis C4
21 Slot Chassis Assembly
3 High Speed Fan Trays
2 x 50ft DC Powering Cables
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Detail Description:
Architecture Overview
The ARRIS C4 ® CMTS is a PacketCable™ 1.1/1.0, DOCSIS® 2.0, Euro-DOCSIS 2.0,DSG, and PCMM ready edge router that delivers unprecedented service availability and wire-speed performance under all operating demands. It enables operators to increase subscriber satisfaction and retention by providing 99.999% system availability and a design that sustains any system component failure without interruption of service. The C4 CMTS is engineered to support DOCSIS 1.1/2.0 and PacketCable features, providing operators with an unprecedented array of Quality of Service capabilities. Release 5.1 offers enhancement features to DOCSIS Channel Bonding operation by allowing multiple choices in bonding group size. The C4 CMTS is built on a 21 slot chassis with a mid-plane based architecture designed for continuous system operation. This unique architecture allows the C4 CMTS to provide carrier-grade integrated Layer 3 edge routing and advanced CMTS functionality combined in a single chassis. Four types of active modules are included in a complete C4 CMTS system (SCM – System Control Module, FCM – Fabric Control Module, NAM – Network Access Module, and CAM – Cable Access Module) and each module resides in a front slot of the C4 CMTS chassis.
Wideband Application Enhancements
Release 5.1 builds upon the leadership established by C4 FlexPath™ software initially offered in Release 5.0. Release 5.1 adds numerous deployment related enhancements that speed deployment and enhance subscriber experience with fewer changes to an MSO’s existing systems. The C4 FlexPath software, in conjunction with the Touchstone® Wideband Modem WBM650 is now easily deployed in networks with bandwidth limitations. This is accomplished by allowing multiple bonding group sizes in both the upstream and downstream. Channel bonding of packets of is now available in 4x4, 3x3, 2x2 and 4x Virtual1, providing very high data throughputs between the cable operator and the subscribers’ premises. The Touchstone Wideband Modem WBM650 is a DOCSIS 2.0 or Euro-DOCSIS 2.0 (ATDMA and S-CDMA) ready cable modem with speeds much faster than DSL service, and up to four times faster than regular DOCSIS high speed cable modems.
Superior Throughput and Availability
All modules in the C4 CMTS are designed for “hot-swap” operation and can be inserted or removed while the system remains powered and in operation. The C4 CMTS features a 6.4 Gbps hardware switch fabric capable of a sustained 6.28 Mpps forwarding rate even under fully loaded conditions. The programmable switch fabric design provides unique queuing and congestion control in hardware for wire-speed performance under 100% load conditions. With “hitless” RF sparing, if a failure were to occur on any RF module all the devices connected to the failed module would immediately switch to a spare in the group. Up to seven sparing groups can be provisioned in the same chassis to allow an operator to “mix and match” sparing requirements of various sizes. In addition, the C4 CMTS with hitless software upgrade functionality can deploy new system releases without affecting subscriber services.
Superior Density & Scalability
The C4 CMTS supports data capacity of up to 4,500 cable modems per downstream (52,000 cable modems per chassis) or voice capacity of up to 1,800 lines per downstream (32,000 lines per chassis). The high-density DOCSIS 2.0 (2DX12U) RF module provides the industry’s highest density in a 7’ rack (96DX576U) with full flexibility of upstream/downstream mapping per CAM.
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CMTS
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