Lukas or anyone who can help I've been doing quite a lot of testing and I think I can now say where the problem comes from. I have written two components (like TEdit & TDBEdit) with built in buttons. Click the button and the displayed phone number gets dialed by TBlockSerial. That's been working for several years. What I'm now trying to do is cope with the nasty menu driven switchboards.
The sequence is roughly: - click component which dials the number - that component creates instance of TBlockSerial component - TBlockSerial dials the number - press button on headset to pick up whilst number is being dialed - dialer component closes and frees TBlockSerial instance after 15 seconds This is fine, and as I say above has been working well for years. If I then hit a menu driven switchboard (you know the sort - press 1 for Sales, press 2 for finance, press 3 to go totally mad) I now open another form to do the extra bits. It creates its own instance of TBlockSerial and this is where things stop working. It seems that if I create a second instance of TBlockSerial whilst I can connect to the com port any ATCommands I try and send simply time out. If I don't free the instance of TBlockSerial after dialing I can't hang the phone up. I don't even know if what I'm trying to do is possible or if I'll have to modify my dialer component so I can use it for the switchboard menu responses. I don't want to because that will mean having to close it manually every time even when there are no extra bits. I need to do this because I now have a DECT headset (think DECT phone without keypad) registered to the same base station as the DECT handset hence I can't press the keys on the handset anymore to cope with the menus. Roy Lambert ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ synalist-public mailing list synalist-public@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/synalist-public