I don't know the answer to this since I never got the oncomm event to work (not know the technique of Message #257005. Hopefully someone else can jump in a help you with this.

>It did help. I now have a (too much) reliable OnComm() event. I said too much, because it fire many times for each new string in the Input buffer.
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>I inserted a DEBUGOUT in the OnComm() event and it give me a series of "ATA" (when I ask the modem to answer the phone), a series of "CONNECT", etc. It doesn't give me problems for now, but I wonder why it fire so many times for a single event.
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>>Hi Sylvain. Does Message #257005 help?