A. Very-high-speed DSL 2 (VDSL2) is an access technology that exploits the existing infrastructure of copper wires that were originally deployed for basic telephone services. You can deploy VDSL2 from central offices, from fiber-fed cabinets located near the customer premises, or within buildings. The newest and most advanced standard of DSL broadband wireline communications, VDSL2 is designed to support the wide deployment of services such as voice, video, data, high-definition television (HDTV), and interactive gaming. It has been standardized as ITU G.993.2.
Q. Which Cisco IOS
® Software release and firmware are required?
A. For ADSL/2/2+, ITU G.992.1, G.992.3, and G.992.5, Annex A refers to asymmetric DSL (ADSL) over basic telephone service, and Annex B refers to ADSL over ISDN. For VDSL2, Annex A specifies band plans for the North American region and enables VDSL2 to be deployed with traditional basic telephony or in an all-digital mode. Annex B specifies band plans for Europe and enables VDSL2 deployment with underlying basic telephone or ISDN services.
Q. Does the Cisco HWIC-1VDSL support both Annex A and Annex B?
A. Yes, it supports Annex A and Annex B with band plans 997 and 998. Only VDSL2 over basic telephone service is supported. The all-digital and over-ISDN modes are not supported.
Q. Does the HWIC-1VDSL platform support both ATM and Ethernet Packet Transport Mode (PTM)?
A. No, it supports only PTM.
Q. What is the maximum data rate that the HWIC-1VDSL can support?
A. Please refer to Table 1 for the profiles the HWIC-1VDSL supports and the maximum data rate achievable by each profile. VDSL2 profiles are defined to help simplify network equipment configuration tasks for different regional deployment architectures such as central office, remote DSL access multiplexers (DSLAMs), digital loop carriers, and multiple-dwelling units. The actual data rate negotiated during the line training process depends on the profiles and band plans supported by the DSLAM, the distance of the customer premises equipment (CPE) from the central office where the DSLAM is located, noise conditions, and other parameters associated with line quality.
Table 1. Profiles Supported by the Cisco HWIC-1VDSL
Maximum combined data rate (upstream and downstream)