Installation manual

Windsor Installation Manual - Issue C

Windsor Modem

Mounting Positions

The Windsor modem can be mounted in 2 ways in a Windsor 500; either on PCB mounted

pillars or on above one of the ISB PCBs. In a Windsor 700 the modem can only be fitted

above one of the ISB PCBs.

Windsor modem fitted above

ISB PCB position 1, 2 or 3

(Windsor 500 or 700)

Windsor modem fitted on

PCB mounted pillars

(Windsor 500 only)

Windsor Modem

Status LEDs

LED Name Variant Function

DCD RX only Data Carrier Detect - on if carrier signal is detected from a

remote modem.

RTS RX only Ready To Send - used with CTS to perform data flow

control

DTR RX only Data Terminal Ready - on to indicate that the host is ready

for data communications

RI RX only Ringing Indicator - ringing has been detected

DSR RX only Data Set Ready - on to indicate a connection to the

telephone line

TXD RX only Transmit Data - data is being transmitted

RXD RX only Receive Data - data is being received.

CTS RX only Clear To Send - used with RTS to perform data flow

control

Comm Fail RX and panel on continuous if a call attempt fails

coincident with call progress tones

Comm OK RX and panel the last communication was successful and

flashes rapidly during the power up sequence

Exchange voltage is OK.

Power RX and panel DC power present

Off hook RX and panel modem is off hook

Comm Fail/OK RX and panel Rapid flashing indicates modem power up sequence