The Cisco cable interface line card transmits and receives RF signals between the subscriber and the headend over the hybrid fiber-coaxial (HFC) system. This DOCSIS 3.0 compliant line card is designed specifically for the Cisco uBR10012 universal broadband router and conforms to the Modular CMTS (M- CMTS) architecture.
The Cisco cable interface line card has the capacity to support 72 downstream (DS) and 60 upstream (US) channels, depending on the license purchased. The line card supports 15 cable MAC domains (cable interfaces), and the DS and US channels can be associated with any of these 15 MAC domains. Each MAC domain supports a maximum of 32 DS and 8 US channels.
The Cisco cable interface line card has 20 US spigots for RF connectivity, which are organized into 5 groups of 4 connectors each. Each connector group supports up to 12 frequency-stacked US channels, with a default configuration of 3 US channels per RF connector. The line card also provides the flexibility to configure lesser number of US spigots. For example, you can configure 10 US spigots with a frequency-stacking of 6 US channels per spigot.
The Cisco cable interface line card has six Gigabit Ethernet (GE) interface ports organized into three pairs for DS connectivity. Each pair supports 1+1 redundancy and supports 24 DS channels in Annex B mode by default. The GE interfaces connect to an external Edge Quadrature Amplitude Modulation (EQAM) device and provide M-CMTS compliant Downstream External PHY Interface (DEPI) data. This data is directed to only one GE interface, though both the GE interfaces can be active at the same time.
The Cisco cable interface line card uses a front panel display (FPD) to show the licensing status information of the US and DS channels.
Figure 1 shows the face plate of the line card. The product ID (PID) of this card is UBR-MC3GX60V.
Figure 1. Cisco Cable Interface Line Card
Table 1 shows some of the US and DS channel combinations supported on the Cisco line card and their corresponding license type.
Table 1 Cisco Cable Interface Line Card License Information
|Front Panel Display
For more information on the Software Licensing feature, refer to the Cisco uBR-MC3GX60V Cable Interface Line Card Hardware Installation Guide.
You must ensure that two DOCSIS Timing, Communication and Control (DTCC) cards are configured in the DOCSIS Timing Interface (DTI) mode on the Cisco uBR10012 router to make the Cisco cable interface line card work with an EQAM device.