CXR provides a large selection of symmetrical xDSL WAN modems utilizing one or two pairs of copper to transport synchronous interfaces E1, T1, X21/V11, V35, RS-530, as well as asynchronous RS-232 and Ethernet.

These modems employ the most recent G.SHDSL technology or the proven MSDSL technology. CXR can also supply modems using the old HDSL technology.

High rate WAN modem G.SHDSL

Theses modems employ a technology which provides an auto-adaptive rate to the quality/distance of the copper. Data rates are 2.3 Mbps for one pair and 4.6Mbps with two pair. The distances are 40% greater than the old HDSL technology.

The MD4000 from CXR Anderson Jacobson integrates G.SHDSL with TC-PAM16 coding approved by UIT, ETSI and ANSI to transport 2.3Mbps traffic over multi-pair telephone lines. This technology cans cohabitate with E1-MIC, E1-PRI voice and ADSL line over the same telephone lines.

The MD4000 is available in 2 or 4 wire models, includes repeaters/regenerators that can be powered over the line from the central office.

The auto-adaptive large spectrum coding and transmission give it a high level of resistance in noisy environments.

The MD400-E1 is a new generation modem, very economical to deploy in E1/T1 networks for Voice/Mobile/PMR by TELCOs or large organizations. This new system is based G.SHDSL.Bis components and can be powered locally with AC/DC or remotely over the line.