RAD Data Communications has released version 2 of its IPmux-14 TDM pseudowire gateway, which supplies Ethernet, TDM and HDLC-based services over packet switched networks (PSNs). HDLC-based services include Frame Relay, X.25 and transparent PPP transmission. Using RAD's patented TDM over IP (TDMoIP) technology for transparent voice and data, the IPmux-14 TDM pseudowire gateway enables carriers and service providers to take advantage of the popular new IP/Ethernet/MPLS networks to deliver TDM-based voice, fax, modem, and data services without compromising traditional PSTN quality.

HDLC pseudowires support HDLC-based data with bandwidth optimisation by suppressing HDLC idle flags.

The IPmux-14 TDM pseudowire gateway converts TDM user traffic data streams from four E1/T1 ports or a serial port into IP packets or MPLS frames for transmission over the PSN via a Fast Ethernet uplink, either UTP or fibre.

Another TDM pseudowire gateway at the remote side converts the packets back to TDM traffic.

A low port density version, the IPmux-14/2, offers two E1/T1 ports instead of four.

The IPmux-14 TDM pseudowire gateway offers extended, Layer 2-based, TDM and Ethernet integrated access capabilities.

The product enables wire-speed bridging between the user LAN and the Ethernet WAN.

User LAN traffic can be rate limited, tagged and filtered (based on VLAN membership) and double VLAN tagging (VLAN stacking) can be applied to better engineer the network and allow a granular bandwidth capacity offering.

'RAD's IPmux-14 TDM pseudowire gateway reduces operating expenses by delivering virtually all TDM, data and LAN services over IP/Ethernet/MPLS networks, while ensuring priority for the voice traffic over the network link,' states Ron Agam, Senior Product Line Manager at RAD Data Communications.

'End users continue to receive all familiar services, while carriers and service providers maintain revenues from legacy services,' he explains.

'The compact size, ease of installation and support for multiple legacy and next generation Ethernet and IP-based services make the IPmux-14 TDM pseudowire gateway well suited for both carriers and enterprises'.

With a highly advanced clock recovery, the IPmux-14/A is able to provide high quality TDM pseudowire with 16 ppb clock accuracy while maintaining strict jitter and wander standards compliant with a G.823 synchronisation interface.