Specifications

ST900 Family General Handbook
667/HB/32900/000 Issue 10 Page 76 of 265
4.7 Handset Interface (RS232 Port)
Access to the ST900 timings and status information is gained by entering
commands on an approved handset or PC and interpreting the response on the
display.
The connection for the handset is a ‘25-way D-Type’ to RS232C CCITT V24 / V28.
The handset link runs at 1200, 9600 or 19200 baud and supports either 7 Data Bits
with an Even Parity bit (7E) or 8 Data Bits and no parity (8N). It can produce
anything from a 14 character single line display to a 80 character by 24 line full
screen status display that displays the results of up to 10 handset commands
simultaneously. The default display width is 20 characters.
The ST900 Controller Handset Handbook (/HH/) gives full information on handset
operation and codes. This should be used when operating the handset.