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Functions
The AHFC-SUA is an active HDLC B- and D-channel controller with integrated
S/T interface, CPU, UART, keyboard interface, PCM30 highway interface and
two CODECs for analog connection. It is used for ISDN basic rate lines.
All channels (2B+D) are served fully duplex by six deep FIFOs. The implemented
PCM30 highway interface is able to connect to MITEL ST(TM) bus (MVIP(TM)),
Siemens IOM2(TM) or GCI(TM).
Features
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FIFO-Depth:
B-channel: 4x 7.5 KByte, maximum 31 HDLC frames per FIFO
D-channel: 2x 512 Byte, maximum 15 HDLC frames per FIFO
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independent read/write HDLC-channels for two ISDN B-channels and one ISDN
D-channel
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56 KBit/s restricted mode for U.S. ISDN lines selectable by software
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full I.430 ITU S/T ISDN support in TE and NT mode
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2 integrated CODECs for connection of analog devices (e. g. phone or fax)
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PCM30 interface configurable to interface MITEL ST(TM) bus (MIVP(TM)),
Siemens IOM2(TM) or GCI(TM) for external CODECs
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integrated CPU
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integrated RS232 interface (UART) and keyboard interface for external key
matrix
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CMOS technology 3V-5V
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