Multi-Service Converter (RC7235A2)

Overview

The RC7235A2 is the updated revision of RC7235, and can be applied to E1 fiber modem, multi-service fiber modem, multi-service E1 converter or multi-service ST-BUS converter. The RC7235A2 has V.35/FE1/STDW-BUS/HDLC interface on user port and optical/E1/ST-BUS interface on line port. The STDW-BUS interface can realize data and voice complex access. The RC7235A2 provides two configuration modes (MP and PS-BUS), one built-in BERT unit, and enhances the capacity of network management. The RC7235A has tiny size and very low power consumption. It is very suitable for developing kinds of desktop terminals.

Features

• Optical, E1 or ST-BUS interface on line port; V.35, FE1, HDLC and STDW-BUS interfaces on user port
•  Optical bit rate is 4.096Mb/s, LVDS or LVTTL interface, built-in CRU, RPD* function
•  E1 or FE1 transmission, framer and deframer in both E1A* and E1B*, meeting ITU-T G.703, G.704, G.706 and G.823
•  FE1 supports CRC/non-CRC mode, CRC can be adaptive by automatic or manual
•  FE1 supports PCM31 and PCM30 whose TS16 for signaling transmission
•  STDW-BUS interface supports data and voice complex access
• Ethernet transmission when HDLC interface connected to RC7222*
•  ST-BUS interface for FE1 and V.35 complex access
•  Time slot can be configured successively or dispersedly for V.35, FE1, HDLC and STDW-BUS interfaces
•  V.35 interface in DTE or DCE mode, automatic or manual adaptive TX clock phase and manual adaptive RX clock phase
•  Configurable timing modes, including local timing, optical, E1A, E1B, V.35 interface timing, bidirectional asynchronous timing and external synchronous timing
•  Built-in DCO, external VCO is unnecessary when V.35 interface timing
•  MP for configuration and status display, PS-BUS for configuration
•  Built-in BERT unit for line self-testing
•  Monitoring all interfaces’ status from local or remote terminals
•  TQ100 package, 5V/3.3V I/O voltage, 3.3V power supply

Functional Block Diagram

Figure  Functional Block Diagram

Application

• Multi-service Fiber Modem or E1 Converter

Figure 1 Application I

• Multi-service ST-BUS Converter

Figure 2 Application II