We are sending faxes from VB 6 using WinFax Pro. This is done with no user interaction.
If a fax fails to be sent, we want to know why – particularly if it turns out that the telephone number is incorrect and a real live person answered the phone instead of a fax machine. I know someone whose system called somebody every 10 minutes all night long and I want to avoid that.
The problem is that the error codes we get by doing SendObj.GetMessageErrorCode seem to be imprecise and unreliable. It seems that error 11, “No Answer”, covers both a person answering the phone and the line ringing without being answered. Also, we sometimes are given an error 4, “Line busy”, instead of error 11, when a person answers the phone.
Anyone have any information on how we could get more exact and consistent error information from WinFax on why a fax was not sent?
Also, are there any standards on how often and how many times to retry to send a fax that could not go through? I would guess that there is little downside to retrying a busy phone number many times, just want to see if there are any gotcha’s I am not considering.
Thanks,
Aaron
If a fax fails to be sent, we want to know why – particularly if it turns out that the telephone number is incorrect and a real live person answered the phone instead of a fax machine. I know someone whose system called somebody every 10 minutes all night long and I want to avoid that.
The problem is that the error codes we get by doing SendObj.GetMessageErrorCode seem to be imprecise and unreliable. It seems that error 11, “No Answer”, covers both a person answering the phone and the line ringing without being answered. Also, we sometimes are given an error 4, “Line busy”, instead of error 11, when a person answers the phone.
Anyone have any information on how we could get more exact and consistent error information from WinFax on why a fax was not sent?
Also, are there any standards on how often and how many times to retry to send a fax that could not go through? I would guess that there is little downside to retrying a busy phone number many times, just want to see if there are any gotcha’s I am not considering.
Thanks,
Aaron
