Lan 1 introduces new VDSL2 line cards

The cards are based on technology from semiconductor company Broadcom, and form part of Lan 1's product range from US-based broadband Internet access devices vendor ZyXEL.

According to Mark Roberts, business manager for Lan 1, ZyXEL has various form factors of VDSL2 products, ranging from 8-port stand-alone products to maximum 768-port chassis-based MSAN products.

The newly-introduced VLC1324G-51 and VLC1348G-51 line cards feature 24 and 48 ports respectively, and are said to have been designed for telcos using VDSL2 technologies for higher bandwidth applications in fiber-to-the-node (FTTN) scenarios.

VDSL2 also is a popular technology for MTU (Maximum Transmission Unit) in-building broadband DSL applications for telcos and service providers.

“Ethernet over VDSL2 has changed the fundamental economics of broadband services," Roberts said.

"The VLC1324-51 and VLC1348G-51 line cards complement ZyXEL’s existing IES-5005/5000/6000 MSAN chassis product lines with the latest Broadcom-based VDSL2 chipsets."

"These line cards fit into ZyXEL’s chassis-based MSAN products namely IES6000, IES5000 and IES5005,” he explained.

The new VLC1324/48G-51 line cards support bandwidths up to 100Mbps with seven different profiles, so service providers can configure ports based on different service offerings.

“In addition to higher bandwidths, ZyXEL’s VDSL2 offering significantly extends the loop distance to 19,000 feet," Roberts said.

"The line cards also support IEEE 802.1ag Connectivity Fault Management (CFM) enabling service providers to detect, analyze and isolate faults in bridged LANs thus reducing support costs and improving service uptime," he said.

Also available are Quality of Service features like downstream power back-off (DPBO), upstream power back-off (UPBO), rate adaption and PHY-R from Broadcom, enabling service providers to improve line quality and offer superior IPTV and VoD services.