Appendix A – TAP Interface Specifications - 10
The TAP mo de of operation can be supplemented with two additional functions, including Host Monitoring
Function, and Contact Monitoring Function. See Appendix J - Host Monitoring Function and Appendix K - Contact
Monitoring Function, for operational details.
The operational modes available for paging using the TAP Paging Protocol include:
• System Identification Command
• Paging Session Login
• Paging Operation
• Paging Session Logout
SYSTEM IDENTIFICATION COMMAND
The System Identification command allows installation programs and other software applications to poll
serial ports for the existence of a WaveWare paging encoder using the standard ATI command. This can be
used for a supervised process (also called keep-alive) where the host system periodically polls the paging
system for a response.
When the WaveWare paging transmitter recognizes a command formatted as ATI<CR>, the transmitter
responds with the following message:
WaveWare Paging Encoder v6.35<CR>
The firmware version number is subject to change.
PAGING SESSION LOGIN
The Paging Session Login mode allows a Host Device, sometimes called a Remote Entry Device, to initiate
communications with the paging system. With the SPS-5 Paging System, the Login process is optional.
The SPS-5 Paging System will automatically login a Host Device and process the paging message if it
recognizes a properly formatted TAP message block at any point in it’s operation.
The Host Device initiates the Login process by transmitting a carriage return <CR> character every two
seconds until the paging system properly responds or until the Host Device times out and notifies the
operator of a bad connection. The paging system will respond with “ID=<CR>” (Note: the quotation
characters are used here only for reference and are not included in the transactions). The “ID=<CR>” will
not be repeated or timed out by the paging system.
The Host Device should respond to the paging system with:
<ESC>PG1<CR> or <ESC>pg1<CR>
The SPS-5 Paging System will then respond with:
110 1.8<CR>WaveWare Paging Encoder v6.35<CR><ACK><CR>
The “110 1.8” message indicates that the system conforms to TAP specification version 1.8 and should be
backward compatible with earlier TAP implementations. The paging system then notifies the Host Device
that it is ready to accept messages as follows:
<ESC>[p<CR>
This completes the Login process.
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