RAD Industrial Partner

RAD DXC-30 Modular Digital Cross Connect DT1B - T1 Link Module Simple Type: Expansion Module

DT1B is a two-port T1 link module for use with RAD’s modular Digital Cross-Connect units DXC-8R, DXC-10A, DXC-30, and DXC-30E. Each module provides two T1 links over copper or fiber optic interfaces that support both T1 and fractional T1 rates. DT1B can be ordered with either a balanced copper or a fiber optic interface. The following fiber optic, laser link options are available: 850 nm multimode, 1310 nm single mode, 1550 nm single mode, providing the, maximum range of 100 km (62 mi). DT1B supports D4 (SF) or ESF framing and 1.544 Mbps unframed mode per ITU-T Rec. G.703. DT1B modules support two types of redundancy: Single-slot/line redundancy (1:1) ensures protective switching between ports on the same module within less than 50 ms. Y-cable redundancy switches between different modules to protect the service from hardware failure. This type of redundancy is supported by the copper interface only. For longer-range applications, copper link modules are available with an CSU option for increasing the line attenuation up to –36 dB. The optional port bypass feature ensures continuous traffic support in case of power failure, by bypassing port 1 to port 2. Two user-programmable timeslot routing modes are available for the module ports: Bidirectional with symmetrical routing, Unidirectional with independent control over routing in each direction. Setup, control, and diagnostics can be performed via a supervisory port using an ASCII terminal or by the RADview SNMP element management system. Remote units can be controlled using a dedicated management timeslot in the T1 path. Diagnostic capabilities include self-diagnostics on power-up, analog and remote loopbacks, BER test on the active timeslots, and the inband code-activated loopback, specified in ANSI T1.403.

Download the datasheet (PDF)