RAD Industrial Partner

RAD DXC-30 Modular Digital Cross Connect DFSTM-1 - STM-1 Multiplexer Module Simple Type: Expansion Module

DFSTM-1 is an STM-1 multiplexer module with a capacity of 61.44 Mbps (30 E1 data streams) for the DXC-8R, DXC-10A and DXC-30 Multiservice Access Nodes DFSTM-1 modules are available with two port configurations: Single-port module. Dual-port module for redundancy or daisy chain applications. The secondary port can be ordered with the same interface as the primary port, or a different one, either in media (copper or fiber) or interface type The DFSTM-1 module provides direct access to the STM-n SDH ADMs, at the STM-1 level (155.520 Mbps). It operates opposite another DXC or any other standard STM-1 equipment When operating as a fractional SDH Terminal Multiplexer (TM) in a DXC chassis, DFSTM-1 can multiplex traffic from up to 30 E1 data streams into a single STM-1 data stream. The module routes any E1 data stream to any of the 63 TU-12 tributary units carried in the STM-1 VC-4 virtual container. As a TM, DFSTM-1 grooms and multiplexes T1/FT1, E1/FE1, IDSL/ISDN, SHDSL, n × 56/64 kbps data, as well as n × E1/T1 data (where n = 1 to 8) in conjunction with the DIM inverse multiplexer module. DFSTM-1 can distribute up to 960 timeslots from up to 30 VC-12 containers of the full STM-1 link and distribute them among the various other installed modules. These can include any E1, T1, ISDN/IDSL, SHDSL n × 56/64 kbps data, or a DXC inverse multiplexer module. When multiple units are connected in a drop-and-insert configuration, a full STM-1 stream (63 × E1) can be distributed among an unlimited number of chassis A DXC with the DFSTM-1 module can be also used as an E1/T1 converter To support DFSTM-1 modules, the DXC chassis must include the Common Logic module DCL.3, running software version 7.00 or higher. The STM-1 port can be ordered with one of the following interface types: Electrical intra-office copper interfaces, for direct connection to higher-level SDH multiplexers. Optical interface, enabling remote access to regional and national SDH transmission networks. The following fiber-optic STM-1 interface options are available: 1310 nm single mode with laser transmitte. 1550 nm single mode with laser transmitter. The DFSTM-1 module with two STM-1 ports can be configured for physical layer (line) redundancy. If the active STM-1 port or its link fails, the traffic is automatically switched (within less than 50 msec) to the other STM-1 port. Setup, control, and diagnostics can be performed using an ASCII terminal connected to the supervisory port, or with the RADview SNMP element management system Diagnostic capabilities include self-diagnostics upon power-up, local and remote loopbacks, and performance monitoring of external and internal ports. DFSTM-1 modules operating in a DXC-30 chassis require an external cooling unit. A fan tray is available for this purpose. The DXC-8R and DXC-10A chassis do not require additional cooling.

Download the datasheet (PDF)