BLC 6000 Blades
BLC 6246 ADSL2Plus and POTS with Gigabit Ethernet and Powered T1
The BLC 6246 ADSL2Plus Blade provides 24 ports of ADSL2Plus with Lifeline POTS on the same port to deliver high take rate voice, data and video services in low-density applications. The BLC 6246 includes four T1 interfaces which can be optionally be configured for span powering of repeaters. These flexible T1 interfaces can be used for transport or subscriber facing services. This provides the flexibility to deploy the Blade in copper fed remote cabinets today and then later to upgrade those cabinets to Gigabit Ethernet over fiber. The combining of integrated subscriber DSL and POTS ports with T1/MLPPP or Gigabit Ethernet transport capabilities positions the BLC 6246 Blade as a Triple Play workhorse for delivering IP multiservice network applications.
- Splitterless Lifeline POTS with ADSL2+
- Broadband DSL data service
- Video Optimized Remote IP DSLAM
- Flexible Gigabit Ethernet transport
- 50 msec Alternative Path Failover
- Business Ethernet services
- T1/MLPPP Transport Option
- T1/DS1 Subscriber Services
The BLC 6246 functions as an access gateway between standard ADSL ATM and native IP-over Ethernet technology to provide a seamless connection from the access network to IP routers, Ethernet switches and IP digital video headends in the core network and in switch centers.
Each ADSL/POTS port on the BLC 6246 includes an internal splitter. The Blade separates voice, data and video traffic and transports the traffic over the feeder network according to the provisioned QoS parameters. Lifeline POTS 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 Voice Gateway, which provides TR-08/GR-303 connections to a standard Class 5 switch. Data and video traffic are delivered to the headend equipment using native IP/Ethernet.
Equipped with four optionally powered T1 interfaces the BLC 6246 Blade can be deployed initially in copper fed remote cabinets, which can later be upgraded to support Gigabit Ethernet over fiber. This enables providers to leverage their existing infrastructure and to move to a fiber network when subscriber demand warrants it. Multiple T1 interfaces can be aggregated with MLPPP to provide sufficient bandwidth for POTS 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 new or existing remote cabinets to deliver T1/DS1s services for applications such as cell site backhaul, special services and customer PBX circuits.
IP Video Optimized
The Gigabit Ethernet core of the BLC 6246 Blade is a high performance, wire speed Ethernet switch with eight ports that may be used for optical (2) or copper (6) connections.
The Ethernet ports may be used in any configuration or combination for network transport, for blade interconnection or as uplinks to core routers.
With Gigabit Ethernet transport, the BLC 6246 Blade provides ample bandwidth to deliver video services today and into the future. The Blade can simultaneously support 512 unique broadcast channels and provides sufficient bandwidth to sustain the expected growth of Video On Demand (VOD).
The BLC 6246 Blade also provides streamlined network operation with IP Video Headends. Occam's BLC 6000 system creates a native IP delivery network that eliminates the complexity of ATM transport and the need to switch ATM virtual circuits with IP multicast signaling (IGMP). Because the video is delivered with native Ethernet, BLC 6000 networks eliminate the bandwidth and packet processing overhead associated with transporting IP video packets segmented into ATM cells.
Like all Occam BLCs, the BLC 6246 Blade includes IGMP based Multicast optimizations 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.
Though the 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/ADSL2+ capacity in high-density deployments with other BLC 6000 blades in the BLC6012 High Capacity Chassis. The single blade BLC 6246 assembly may be stacked with additional BLC assemblies to add capacity and hardware redundancy to space-constrained remote terminals.
The Blade's subscriber interfaces support a broad range of off-the-shelf ADSL modems: ADSL G.DMT, G.DMT with S=1/2, ADSL2, and ADSL2Plus.