Ring Communications DXB901 - Manual (Page 8)

JUNE 2001 DIGITAL EXCHANGE BRIDGE DXB901
E8 RING COMMUNICATIONS INC.
INDICATOR DESCRIPTION - See Figure E2
L.E.D.'s - Figure E2
RX PCM - RECEIVE PULSE CODE MODULATION. Flashes when the DXB901 is receiving
(RX) data from other bridges.
TX PCM - TRANSMIT PULSE CODE MODULATION. Flashes when the DXB901 is
transmitting (TX) data to other bridges.
RSRQ - RECEIVE SERVICE REQUEST. Flashes when other bridges are
requesting to send data to this network.
TSRQ - TRANSMIT SERVICE REQUEST. Flashes when this DXB901 has a message to
send to another bridge.
RECEIVE - Flashes when data is received from network.
TRANSMIT - Flashes when data is transmitted to network.
MASTER - Illuminates when the DXB901 is a master on the network. Will light steady after 4+n
seconds, where n = network number.
RUN - On steady approximately 1 second after reset. Indicates DXB901 processor is
running.
SWITCHES - Figure E2
SW1 - Reset. Creates a local reset for the DXB901.
SW2 - Selects Node & Network address.
SW3 - Sets transmit time slot.
CONNECTORS - Figure E2
P3 - Connects the 2Mbit PCM channel signals from the DNI to the DXB901 through an
auxiliary connector on the front of the cards. One side of the cable is attached to the
DXB901. The 16 pin connector is keyed to ensure proper installation.