Paul, at 09:29 on Feb 11 1996, you wrote to Bill Grimsley...

BG> Incidentally, I had my first failed connect with his Courier this morning - 
BG> a 28800 MNP connect was negotiated, then the modem immediately dropped 
BG> carrier.  Called again, got another 28800 MNP connect, and the mail 
BG> transferred OK that time.  Most people would blame the modems, but not me.  
BG> Not this time.  I'm not forcing MNP here, so Paul has apparently been 
BG> playing around with his Courier's S27 register, something that should be 
BG> left well alone unless one knows exactly what they're doing.  And I'm 
BG> convinced that Paul doesn't, I'm afraid.

PE> That is correct, I changed S27 to 48 as directed in AUST_MODEMS.
                                            ^^^^^^^^
Tell me, do you always do as you're told, without first understanding the
consequences?  Nice register to be fucking around with, too.

==========================================================================
S27          0          Bit-mapped register.  To set the register, see the 
                        instructions for S13.

                        Bit     Value   Result
                        0       1       Enable ITU-T V.21 modulation at 300 
                                        bps for overseas calls.  In V.21 
                                        mode, the modem answers both Bell 
                                        103 and V.21 calls, but only 
                                        originates V.21 calls.
                        1       2       Enable unencoded (non-trellis-coded) 
                                        modulation in V.32 mode; this option 
                                        is part of the ITU-T V.32 
                                        recommendation, but is rarely used.
                        2       4       Disable V.32 modulation; used for 
                                        testing HST modulation in Dual 
                                        Standard modems.
                        3       8       Disable 2100 Hz answer tone to allow 
                                        two V.42 modems to connect more 
                                        quickly.
                        4       16      See next page.
                        5       32      See next page.
                        6       64      Reserved.
                        7       128     Unusual software incompatibility.  
                                        Some software may not accept 7200, 
                                        12000, 14400, 16800, 19200 and 21600 
                                        bps result codes.  This setting 
                                        disables the codes and displays the 
                                        9600 code instead.  The call's 
                                        actual rate can be viewed on the 
                                        ATI6 screen.

                                        Error control handshaking options:  
                                        select the total values of bits 4 
                                        and 5.  

                                        Bit 4   Bit 5   Result
                                        0       0       Complete handshaking 
                                                        sequence:  V.42 
                                                        Detection, LAPM 
                                                        error control, 
                                                        MNP
                                        16      0       Disable MNP
                                        0       32      Disable V.42 
                                                        Detection and LAPM
                                        16      32      Disable Detection 
                                                        phase, if you know 
                                                        that the remote modem 
                                                        does LAPM, but not 
                                                        the Detection phase.
===========================================================================

PE> All that did was show up another bug in the Courier.  Nay, TWO bugs now 
PE> that you've added that you had a failed call.

Nope, I simply have no faith in you getting it right, that's all.

Regards, Bill

--- Msgedsq/2 3.20