BLC 6000 Blades

The 24-port BLC 6246 ADSL2Plus and POTS combination blade enables service providers to deliver unparalleled voice, high-speed data and low-maintenance, high-impact digital television and video services. The blade provides 24 2-wire hybrid copper subscriber ports that deliver industry leading performance and reliability. True lifeline telephone service and high-performance ADSL2Plus connectivity are combined on each port for maximum efficiency and scalability.

The ADSL/POTS ports on the combination blade do not require a splitter.  Spectral separation of the analog and digital signals occurs in a high performance digital signal processor (DSP).  The blade packetizes the different signals and transports the traffic over the feeder network according to the provisioned QoS parameters. Lifeline voice is converted to VoIP using MGCP or SIP signaling.  At the Central Office, voice traffic is transmitted directly to a softswitch or to a BLC 6640 Trunking Gateway blade, which provides GR-08/GR-303 connections to a standard CLASS 5 switch. The BLC 6246 delivers data and video traffic to router and headend equipment using native IP/Ethernet.

The Gigabit Ethernet ports of the BLC 6246 blade provide integral optical fiber transport for the system. The blade is equipped with eight Gigabit Ethernet ports: two optical and six copper. The Ethernet ports may be used in any configuration or combination for network transport, for blade interconnection or for Ethernet service delivery.

IP Video Optimized

With Gigabit Ethernet transport, the BLC 6246 blade provides sufficient bandwidth to deliver video services today and into the future. It can simultaneously support 512 unique broadcast channels and provides sufficient bandwidth to sustain the expected growth of Video On Demand (VOD), IPTV and other advanced video services.

Like all Occam BLC blades, the BLC 6246 includes IGMP-based multicast optimization to allow a subscriber request for a broadcast channel to join the stream at the closest point in the network. This capability preserves feeder bandwidth for VOD and data services and eliminates the need for common controls and separate equipment to manage multicast, IP processing and subscriber traffic security.

T1 Interfaces

The BLC 6246 includes four T1 interfaces that can be used for transport or subscriber facing services, as well as for span powering of repeaters. The BLC 6246 blade leverages a service provider’s existing infrastructure, providing the flexibility to deploy the BLC 6246 blade in copper fed remote cabinets today and then upgrade those cabinets to Gigabit Ethernet over fiber when subscriber demand warrants it. Multiple T1 interfaces can be aggregated with MLPPP to provide sufficient bandwidth for telephony and data services. The T1 interfaces may also be configured as a structured format to provide DS1 and DS0-based subscriber and network services. The addition of powered T1 interfaces makes the BLC 6246 an ideal choice for delivering T1/DS1 services for applications such as mobile backhaul, special services and customer PBX circuits.

Service Delivery, Testing and Troubleshooting Tools

The BLC 6246 delivers maximum throughput with the lowest internal electromagnetic noise and port-to-port crosstalk. This ensures the highest train rates and lowest impact from binder loading as take rates increase. The blade supports ADSL2Plus, ATM header compression and loop bonding and support high impulse noise protection, physical retransmission, seamless rate adaptation (SRA) and frequency “notching” with PSD masks to help prevent any constant or spurious noise on the line that could result in blocking or tiling of the video service. The ADSL interfaces of the Occam BLC 6246 support an evolving range of off-the-shelf ADSL modems including: ADSL G.DMT, ADSL G.DMT with S=1/2, ADSL2, ADSL2Plus.

Line testing is built into each copper access port of the blade. Single ended line testing (SELT) helps service providers properly qualify a customer for a specific level of ADSL2Plus service and identify trouble areas in the outside plant that should be addressed before offering robust entertainment services in an area. Dual ended line test (DELT) capabilities of the Occam DSL subsystem allow service providers to proactively conduct quality assurance testing of the physical subscriber line. Dr. DSL, an innovative loop diagnostic software tool, is tightly integrated with Occam’s DSL solutions and provides intuitive, comprehensive DSL performance and benchmark analysis.

Common OS Enhances Blade Operation and Service Management

Like all BLC 6000 blades, the BLC 6246 features OccamOS, a common operating system that spans the entire range of BLC 6000 copper, Gigabit Ethernet and GPON products to provide consistent and uniform system and service attributes. This OS integrates a wide range of Occam copper and optical broadband technological advancements including the company’s patented IP Security Management (IPSM), which allows for dynamic, “hands free” network security.

OccamOS also offers excellent tools to identify and troubleshoot Internet, voice and IPTV delivery problems including a full set of notification events, statistics and service assurance tools that allows for dynamic monitoring of any IPTV stream at any point in the network. And Ethernet Protection Switching (EPS) delivers “five nines” network availability, flexible network topologies and use of all network bandwidth through traffic load balancing during normal operation.

Simple Management and Deployment Flexibility

The blade can be easily managed through the integrated command line and web interface or through OccamView Element Management System, a robust, carrier-class element management system (EMS) that manages Occam BLC-based access networks effectively and economically.

Although the BLC 6246 blade is ideal for low-density applications and is often deployed standalone as an assembly in the 1 RU BLC 6001 chassis, it can also be used to add T1 support and incremental POTS/ADSL2Plus capacity in medium- and high-density deployments with other BLC 6000 blades in the BLC 6006 medium capacity and the BLC 6012i/6012 high capacity chassis. The single blade BLC 6246 assembly may be stacked with additional BLC blades to add capacity and hardware redundancy to space-constrained remote terminals.

Multiple Applications

The BLC 6246 blade is used in a variety of applications, including:

• Video optimized ADSL2Plus access
• Lifeline telephone service delivery
• Line access gateway for softswitch
• T1/MLPPP transport
• T1/DS1 subscriber services
• Multiple Gigabit Ethernet optical transport