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APPENDIX H – COMP1 INTERFACE SPECIFICATIONS
The COMP1 protocol allows raw ASCII data to be sent to all pagers in
PAGER GROUP #1
in the SPS5
v9 Series
PAGING GROUP DATABASE
. The COMP1 interface supports paging message blocks up to 255
characters in length, contact monitoring, and timed messaging.
CONTROL CHARACTERS RECOGNIZED BY THE PAGING SYSTEM IN COMP1 PROTOCOL MODE INCLUDE:
•
CARRIAGE RETURN
- <CR> | 13
•
LINEFEED
– <LF> | 10
CONTROL CHARACTERS GENERATED BY THE PAGING SYSTEM IN SOFTWARE FLOW CONTROL INCLUDE:
•
XON
– <XON> | 17
•
XOFF
–
<XOFF> | 19
In COMP1, the paging system does not provide feedback response other than flow control signals,
when in Non-Verbose mode.
COMP1 OPERATION IS AS FOLLOWS:
When incoming data is detected, one of three things will happen:
1.
A carriage return character is detected in the data stream.
2.
A time period of about 10 seconds elapses after receipt of the last character on the serial port.
3.
256 characters or more accumulate in the serial port input buffer.
If any of these three events occur,
the paging system will strip any carriage return and linefeed
characters and transmit the remainder of the data stream to all pagers defined in the system's
PAGER
GROUP DATABASE
. If the serial port input buffer becomes filled with greater than 1000 characters, the
system will output a hardware or software flow control response depending on your flow control settings.
Once the input buffer drops below 450 characters, the paging system will use flow control signals to indicate
that it is no longer busy and that additional data can be delivered to the serial port.
NOTE:
When setting up for COMP1 operation, you should limit the pager quantity in the Group Pager
Database to no more than a few pagers, in order to avoid excessive paging transmissions.
