I received a bug report today concerning tcpser (the Linux/Unix/Windows/MacOS modem emulator) and numeric response codes. https://github.com/go4retro/tcpser/issues/31 I knew long ago that not all codes and commands were common/consistent among modem manufacturers, but I guess I didn't realize even response codes differed quite a bit.  After receiving the bug report, I did a bit of research, and found, for instance, CONNECT 19200 differs: Hayes - 14: http://www.bitsavers.org/.../Hayes_44-012_Technical... <http://www.bitsavers.org/pdf/hayes/Hayes_44-012_Technical_Reference_For_Hayes_Modem_Users_1993.pdf?fbclid=IwAR3Fa4q__uHfplG-WM48UKK4FWuiCBE_XhJlB50eyEMaC_LlnbtKLZoJzOU> Conexant - 16: https://web.archive.org/.../documenta.../dial_up/100498D.pdf <https://web.archive.org/web/20151028101531/http://www.zoomtel.com/documentation/dial_up/100498D.pdf> USRobotics - 85: https://support.usr.com/.../5610a/5610a-files/5610a-user.pdf <https://support.usr.com/support/5610a/5610a-files/5610a-user.pdf?fbclid=IwAR0fmu9fqAaBQyUxFxk2qnk-E_ULIedXlSbNm-pho1dnZ1tinfHAF517Z-w> Phoenix Contact (industrial modem) - 16: https://files.realpars.com/.../um_en_psi_data_basic_modem... <https://files.realpars.com/phoenixcontact/manuals/um_en_psi_data_basic_modem_rs232_102906_01_en.pdf?fbclid=IwAR3-FpTRc3GC13rFRbBVEhZmod4zYjHSAvKETWcS2IacLiE1gpQVV4akPPo> Supra - 16: https://www.manualslib.com/.../Diamond-Supraexpress-56e.html <https://www.manualslib.com/manual/1424004/Diamond-Supraexpress-56e.html?fbclid=IwAR2D0t3xasfKYbkFXMi0E0l43Bbuu9G3K8EdcWwslSL3wwABPYkpEgjIkXM> Multi_Tech -19: https://www.multitech.com/.../public.../manuals/s000316a.pdf <https://www.multitech.com/documents/publications/manuals/s000316a.pdf?fbclid=IwAR2TnTQKpQ60wtUVy5GfcmPPIcWaXUAXe36oGSvijLREWFvjSzq9wcLXNew> I have two questions for the group, if folks can assist: * Since I purport to be Hayes compatible, I should use the Hayes code when available, but the reference above does not go above 38400 bps.  Did Hayes make a modem that went faster (DTE speed?) and if so, can I get a scan of the manual to ensure the codes I am using are the best ones? * Any other modem manufacturers anyone is aware of, with manuals I can check. Jim -- RETRO Innovations, Contemporary Gear for Classic Systems www.go4retro.com store.go4retro.com