Data Sheet DXC Modules D4SL, D8SL 2-wire SHDSL E1 Link Modules 4- and 8-port SHDSL I/O modules for the DXC family of modular cross-connects • Four- and eight-port SHDSL E1 link modules for the DXC family • Up to 2048 kbps per port over existing 2-wire copper cables • User-selectable data rates between 64 kbps to 2048 kbps • Range up to 8 km (5 mi) over 24 AWG 2-wire cables • ITU-T Rec. G.991.2 SHDSL compliance D4SL and D8SL are four- and eight-port Each port is a multirate SHDSL modem I/O modules that use Single-pair operating at user-selectable data rates High-speed Digital Subscriber Line (SHDSL) that are multiples of 64 kbps (1 timeslot), technology, according to up to 2048 kbps (32 timeslots). Payload ITU-T Rec. G.991.2. capacity per module is up to 128 timeslots (8.192 Mbps) or 256 timeslots (16.384 Mbps). Table 1 lists typical range data versus payload data rate. The Access Company D4SL, D8SL 2-wire SHDSL E1 Link Modules The D4SL/D8SL modules can be configured Timeslot traffic through any port can be Setup, control, and diagnostics can be to operate in accordance with ITU-T Rec. cross-connected with any other DXC performed using an ASCII terminal G.991.2. Annex B, for compatibility with module (excluding another D4SL/D8SL connected to the supervisory port, or by European (or similar) networks. port or module) the RADview SNMP based management system. Each port transfers either G732N or D4SL can operate as a remote solution by G732S multiframes (2 or 16 frames per using an SHDSL uplink to connect the unit D4SL/D8SL modules operating in the multiframe, respectively). The user can to another DXC or other standard SHDSL DXC-30 chassis require a fan tray for also enable the CRC-4 option, specified in equipment. external cooling (see Ordering). The ITU-T Rec. G.704 and G.703, DXC-8R and DXC-10A chassis do not Diagnostic capabilities include local and independently for each remote port. require additional cooling. remote loopbacks on the link, BER test on All ports can operate in unframed mode to the active timeslots, and inband The modules occupy one I/O slot in the transparently transmit unframed 2.048 code-activated loopbacks specified in DXC-30, DXC-10A or DXC-8R chassis. Mbps signals. ANSI T1.403. Performance statistics for the link may be obtained and analyzed via The modules can operate as a central the DXC management system. SHDSL solution opposite RAD’s ASMi-52 SHDSL modems or FCD-IP and FCD-IPM access devices. The units also link with other vendors’ ITU-T G.991.2 compatible SHDSL remote terminal units. Figure 1. Aggregating SHDSL Services over a High-Speed Backbone Data Sheet INTERNAL E1 PORTS GENERAL Specifications Framing Indicators per Port EXTERNAL PORTS G732N – 2 frames per multiframe SYNC LOS (red) – G732S – 16 frames per multiframe On: not synchronized with the remote unit Number of Ports Unframed Flashing: handshaking with the remote 4 or 8 unit Standards Interface Type SYNC LOS (green) – ITU-T Rec. G.704, G.703, G.732 SHDSL On: synchronized with the remote unit Standard Flashing: synchronizing with the remote DIAGNOSTICS ITU-T Rec. G.991.2 unit Performance Monitoring TEST (yellow) – Line Type Per ITU-T Rec G.991.2 On: test is active on the port Single unloaded and unconditioned copper Loopbacks twisted pair Configuration User-activated local and remote loopback Programmable via the DXC management Nominal Line Impedance on each port system 135Ω Remote loopback activation by inband FT1 code (on all timeslots, or on specific Timing Typical Ranges timeslots) D8SL, D4SL central site module: locked to See Table 1 Remote timeslot loopback DXC master clock Connector Remote loopback on the remote unit D4SL remote site module: locked to the Single 25-pin D-type female connector for BER testing on each port central site module all ports Power Consumption 18.5W at maximum data rate on all the ports Physical Occupies a single slot in a DXC-8R, DXC-10A or DXC-30 chassis For comparison of DXC chassis, see Table 2. For the list of DXC I/O modules, refer to the DXC-8R/10A/30 folder. Table 1. Typical Range vs. Payload Data Rate Data Rate Range @ 26 AWG [kbps] [km] [mi] 256 6.5 4 512 5.6 3.5 768 4.55 2.8 1024 3.65 2.7 1536 3.2 2 2048 3 1.85 Note: Typical ranges are based on error-free real-line laboratory tests without noise. 772-132-09/08 Specifications are subject to change without prior notice. 1988–2008 RAD Data Communications Ltd. The RAD name, logo, logotype, and the terms EtherAccess, TDMoIP and TDMoIP Driven, and the © product names Optimux and IPmux, are registered trademarks of RAD Data Communications Ltd. All other trademarks are the property of their respective holders. Data Sheet D4SL, D8SL 2-wire SHDSL E1 Link Modules OPTIONAL ACCESSORIES Ordering CBL-D4SL-STUC DXC-M-8SL-E1 Adapter cable for D4SL (central site 8-port, 2-wire SHDSL E1 link module module), splits a DB-25 connector into 4 × RJ-45 balanced connectors DXC-M-4SL-E1/$ 4-port, 2-wire SHDSL E1 link module CBL-D4SL-STUR Legend Adapter cable for D4SL (remote site module), splits a DB-25 connector into $ Line interface: 4 × RJ-45 balanced connectors STUC central site module STUR remote site module CBL-D8SL-RJ45/X Adapter cable for D8SL, splits a DB-25 connector into 8 × RJ-45 balanced connectors DXC-30M-FT/~ Fan tray (for the DXC-30 chassis only) Legend ~ Fan tray power supply: AC 100 to 240 VAC 48 –48 VDC Table 2. DXC Chassis Comparison Table Feature DXC-8R DXC-10A DXC-30 DXC-100* Height 1U 1U 3U 6U per nest Maximum number of ports 32 40 120 688 (8 nests) Number of I/O slots 4 5 15 86 (8 nests) System redundancy Built-in None Optional Optional E1, T1, E3, T3, STM-1 modules 9 9 9 9 XDSL, inverse multiplexing modules 9 9 9 – n x 56/64 kbps modules 9 9 9 9 Router, OC-3 modules – – – 9 ASCII, SNMP, RADview management 9 9 9 9 Note: The DXC-8R/10A/30 modules and DXC-100 modules are not interchangeable. International Headquarters North America Headquarters 24 Raoul Wallenberg Street 900 Corporate Drive Tel Aviv 69719, Israel Mahwah, NJ 07430, USA Tel. 972-3-6458181 Tel. 201-5291100 Fax 972-3-6498250, 6474436 Toll free 1-800-4447234 E-mail market@rad.com Fax 201-5295777 E-mail market@radusa.com The Access Company www.rad. com