User's Manual

Internal Encoding
RFI-148 & RFI-900 High Output Power Paging Transmitters User Manual Page 41 of 134
o 0: Numerical encoding
o 1: A tone-only message – no message codewords are sent, only an address codeword. The
message field should be empty
o 3: Alpha numeric encoding
• Cap code (4): Also known as pager ID, pager address, pager number, etc. The destination cap code
for this message. For POCASG the valid cap codes are 1 to (2^21)-1
• Function override (1): When set to 0, does not override the “function” bits in the address codeword
and instead uses the page class to determine the function bits. When set to 1 through 4 will encode
the page as per the page class format, however it will override the function bits to this value.
• Message (x): 0 to 239 bytes long message
• <footer>: The generic footer shown in Figure 14
SUBMIT RESPONSE
A reply datagram generated by the RFI PTX. The format of the submit response is shown in Figure 16.
<header>
<footer>
Response
code (4)
Figure 16: Submit response packet format
The fields are:
• <header>: The generic header shown in Figure 14 with the type field set to 1.
• Response code (4): A 32-bit response code:
o 0x0: Page submission succeeded
o 0x1: Page submission failed: too many pages in queue
o 0x2: Unknown datagram type field
o 0x3: Unexpected packet length
o 0x4: Page submission failed: general error
o 0x10: Nothing was performed – this is a link test reply
• <footer>: The generic footer shown in Figure 14.
LINK TEST
A link test is a query with no side effects that confirms the RFI PTX is “alive” and receiving datagrams. The
reply to a link test query is a submit response but with the response code of 0x10.
The format of the link test query is shown in Figure 17.