Filter
Top Products
Chapter 3 – Fax Class 2 Commands
Multi-Tech Systems, Inc. SocketModem MT5634SMIxx Reference Guide (S000263C) 68
T.30 Phase C Page Reception Responses
Receive Page Transfer Status
Class 2.1 +FPS:
Syntax: +FPS:<ppr>,<lc>,<blc>,<cblc>,<lbc>
The +FPS:<ppr> response is generated by the modem at the end of Phase C data
reception in execution of a +FDR command.
The <ppr> response is generated by the modem; it depends on the modem for T.4 or
T.6 error checking capabilities, controlled by the +FCQ parameter. See Table 3.0 for
<ppr> values.
The receiving modem may count lines and bad lines and report them. Values are:
<lc> line count
<blc> bad line count
<cblc> consecutive bad line count
<lbc> lost byte count due to modem buffer overflow
The line counts are qualified by the modem’s copy checking capabilities, controlled
by the +FCQ parameter. If the modem is not configured to count lines, or if line
counts are irrelevant (e.g. in Binary File Transfer mode, Recommendation T.434) the
modem sets the line counts to 0.
A receiving host may inspect <ppr> and write a modified value into the +FPS
parameter. The modem will hold the corresponding post page response message
until released by a +FDR command from the host.
Table 3.0 Class 2.1 T.30 Post Page Response Message Codes
Value Mnemonic Description
1 MCF Page good.
2 RTN Page bad; retrain requested.
3 RTP Page good; retrain requested.
4 PIN Page bad; retrain requested; interrupt request accepted.
5 PIP Page good; interrupt request accepted.
Class 2 +FPTS:
Syntax: +FPTS:<ppr>,<lc>[,<blc>,<cblc>][,<lbc>]
The Class 2 response is similar to the Class 2.1 response, except that it may also
use <ppr> codes 0, 6, and 7, which are not used in the Class 2.1 response.
Table 3.1 Class 2 T.30 Post Page Response Message Codes
Value Mnemonic Description
0 PPR Partial page errors.
1 MCF Page good.
2 RTN Page bad; retrain requested.
3 RTP Page good; retrain requested.