Appendix I – COMP2 Interface Specifications - 27
Appendix I – COMP2 Interface Specifications
This appendix is included for those who want to attach the
WaveWare Paging System
to existing systems that
output simplified paging system control commands. The COMP2 protocol is designed to emulate one of the
operational modes of the Motorola People Finder™ paging system. There are two possible modes for COMP2, the
Verbose and Non-Verbose modes. The Verbose mode has been designed to have human readable responses to
message inputs and certain errors. The Non-Verbose mode has no readable responses in it.
A simple definition of the COMP2 protocol is that the COMP2 protocol allows a message formatted as
PagerID<CR>Message<CR> to cause the Message to be delivered to the associated PagerID defined in the
WaveWare Paging System
's pager database. The COMP2 interface supports paging messages up to 253
characters in length, group paging, contact monitoring, and timed messaging. The total length of the control string,
including <CR> and <LF> characters, cannot exceed 256 characters. The PagerID field can be from 1 to 10
characters in length. PagerID field lengths from 5 to 10 digits are assumed to be Extended Pager IDs (See
Appendix E – Extended Pager ID Processing). Carriage Return is the normal field delimiter in COMP2 protocol,
but the tilde (~) character is also supported as a delimiter.
To configure your
WaveWare Paging System
to use the COMP2 paging protocol, you may be required to
configure the DIP switch bank in the paging encoder. Please refer to Appendix B – DIP Switch Settings, for details
on configuring communication protocols. As a quick reference, the DIP switch setting for the COMP2 Verbose
interface is switches 6 and 7 in the OFF position and all other switches in the ON position. COMP2 Non-Verbose
mode is activated by simply turning off switch 8 in addition to 6 and 7. These settings tell the system to operate in
COMP2 interface mode, with communication parameters of 9600N81, with hardware flow control.
Your
WaveWare Paging System
typically communicates with a PC or other host device via RS-232 at 9600 Baud,
8 data bits and 1 stop bit. The eighth data bit is ignored (no parity). You can configure the paging system for other
serial communication parameters. Please refer to Appendix B – DIP Switch Settings, for details on serial
communication parameters.
The paging system maintains an input buffer, which can receive commands from the PC while paging messages are
being transmitted. The paging encoder encodes paging messages into POCSAG paging format and transmits the
encoded paging message through the internal radio transmitter. If the Carrier Detect function is enabled,
transmissions will be delayed while interfering signals are detected.
Control characters recognized by the paging encoder in COMP2 protocol mode include:
CARRIAGE
RETURN
<CR>
$0D
LINEFEED
<LF>
$0A
TILDE
~
$7E
DELETE <DEL>
$7F
or
$FF
Control characters generated by the
WaveWare Paging System
in COMP2 protocol mode when software flow
control mode is active include:
CARRIAGE
RETURN
<CR>
$0D
XON
<XON>
$13
XOFF
<XOFF> $11
ABANDON TRANSACTION
<RS>
$1E
The
WaveWare Paging System
in COMP2 mode is controlled using control strings formatted as follows:
Single Message Example using Carriage Return as delimiter:
PagerID<CR>Message<CR>
Single Message Example using Tilde as delimiter:
PagerID~Message~
