Blind transfer on FXS touch tone phone?

[Mobility1]

Hey there, I have an analog handset that's connected to 3CX via a Grandstream HT814 FXS Gateway. I have figured out how to do an Attended transfer from this phone. I press flash, then dial the extension. I have to wait until the call is connected to the extension before I can hang up. The problem is that I'm sending callers directly to voicemail, and by the time I can complete the transfer and hang up to connect the incoming caller, the voicemail greeting is mostly over. Is there a way to do a blind transfer from the analog handset so the incoming caller will be connected at the start of the transfer and can thus hear the entire greeting? Thanks

 

[leejor]

Most ATA's should have a list of star codes, in the manual, and many allow you to change those, if you wish. In most Grandsteam devices, I believe it is *87 for blind transfers. So... you'd do a flash, get dialtone, dial *87, then the extension you wish to transfer to, wait for the call to complete (or dial #, in some cases), then hang up.