Specifications

Appendix A: TAP Protocol Summary
362 025-9035AA
Definitions
Please note that upper/lower case is important for printable characters, for example, for
<ESC>PG1 the “P” and “G” must be in upper case.
Protocol
Initial Handshake Sequence
1. AED desires to call the M2x00. It initiates the paging sequence, calling the Model
2x00's alpha access #.
2. AED may or may not bring up its modem first (it may wait to see the modem from
the Model 2x00).
3. M2x00 answers and brings up its modem.
4. AED then brings up modem if not already up.
5. The modems at both ends establish the communications link.
Term Meaning
AED Alpha Entry Device, this would be any customized terminal or PC configured
to send alpha-numeric paging requests to the paging terminal
M2x00 A Zetron Model 2100 or 2200 paging terminal
msg optional TAP transaction messages, enabled/disabled per trunk line, default is
active, the ending <LF> is part of the message
Character Meaning
-ASCII
decimal
Value-
hex
Control
Character
<CR> Carriage Return 13 0D ^M
<ESC> Escape 27 17 ^[
<ACK> Acknowledge 6 6 ^F
<NAK> Negative acknowledge 21 15 ^U
<EOT> End of transmission 4 4 ^D
<STX> Start of text 2 2 ^B
<ETX> End of text 3 3 ^C
<LF> Line Feed 10 0A ^J
<RS> Record Separator 30 1E ^^
<US> Unit Separator 31 1F ^_