Managed E1 or Fractional E1 Access Unit

RAD’s FCD-E1L, FCD-T1L, FCD-E1LC, and FCD-T1LC E1/T1 managed access units are used as rate and interface converters for E1/T1 and Fractional E1/T1 services. These units support a wide range of data rates and interfaces, enabling simple connectivity to external devices such as routers. As an option, they can support 10/100BaseT Ethernet interface modules with a built-in bridge or IP router, allowing LAN-to -LAN connectivity.

The FCD-E1L, FCD-T1L, FCD-E1LC, and FCD-T1LC E1/T1 access units are used in a wide variety of applications in which voice and data traffic are integrated over E1/T1 or fractional E1/T1 services. When used in conjunction with RAD’s DXC cross connect products this units support multilink star applications such as SDH networks.

• Multiple services transmitted from a single source
• Management timeslots – allows management of all FCD chain via single DTS

• Suitable for a multitude of campus, corporate or municipal applications

• Supports a wide range of data rates and interfaces, enabling simple connectivity to external devices

• Extend data and voice communications over private E1/T1 or SDH/SONET-based networks

The FCD-E1L and FCD-E1LC are managed single or dual port access units for full or fractional E1 services, ideal for use as managed interface converters. Data port rates are selectable for any multiple of 64 kbps up to 1,984 kbps. Alternatively, unframed E1 can be supported up to 2.048 Mbps.

The FCD-T1L and FCD-T1LC managed access units are the equivalent solution for T1-based environments, providing selectable data rates from 56/64 kbps up to 1,536 kbps or alternatively, unframed T1 can be supported up to 1,544 kbps.

The FCD-E1LC and FCD-T1LC managed access units also offer optional sub-E1/T1 drop-and-insert ports for PBX connectivity.

The basic unit is available with a single data port and an optional second data port. The second data port can be replaced by an Ethernet bridge, 10/100 VLAN bridge or 10BaseT router for FCD-E1L/T1L managed access unit in order to provide direct connection to the LAN.

For ease of installation, the FCD-E1L and FCD-T1L managed access units offer plug-and-play connectivity. Upon connection to the E1/T1 link, the unit automatically detects the E1/T1 parameters and autoconfigures accordingly. Manual configuration is also possible.

The FCD-E1L and FCD-E1LC managed access units are available with an integral LTU (line termination unit) that ensures a range of up to 2 km (1.2 miles).

The FCD-T1L and FCD-T1LC managed access units include a built-in CSU, allowing direct connection to the T1 network. The integral CSU ensures a range of up to 2 km (1.2 mile).

The FCD-E1L and FCD-E1LC managed access units meet all requirements of ITU G.703, G.704, G.706, G.732 and G.823. They support both two and 16 frames per multiframe, with or without CRC-4. Zero suppression over the line is HDB3.

The FCD-T1L and FCD-T1LC managed access units meet all the requirements of TR 62411 and TR 62421 and support both D4 and ESF frame formats. Zero suppression over the line is selectable for either B7ZS or B8ZS transparent.

The units may be clocked from the recovered receive clock of the main/sub-E1/T1 link or from an internal oscillator. The data channel interface is RS-530. Adapter cables are available for V.35, V.36/RS-422 or X.21.

All models support an internal SNMP agent and can be managed by any generic SNMP station or by the RADview SNMP network management application. The units support dial-in/dial-out, which can be used for remote out-of-band configuration and monitoring (dial-in) and for alarms (dial-out).

Diagnostics include user activated local loopbacks on the main/sub-E1/T1 link and DCE data port. A pseudo-random data pattern (BERT) can be used to check the transmission path as well as the local and remote units.

All models are available as standalone units for the desktop or a 19" rack shelf.