Transfer on Old School Cordless

[greatchoice]

I have a grandstream ht801 and the customer wanted to use their old cordless.

I can not figure out how to transfer. They are not Voip phones so there is no transfer button

 

[SweetAction]

Park and unpark have dial codes.
Mobile Transfer Agent Service might be of interest to you as well, limits apply.

Details on both:
https://www.3cx.com/docs/pbx-dial-codes/

 

[leejor]

Does it have a flash button? If it does, and the ATA supports it, It should be a matter of ..flash, receive stutter dial-tone, dial desired extension, wait for answer, announce the call, then hang up.

If you want to do a blind transfer, then you would, again, use the flash button, but dial the blind transfer (star) code used by the ATA, then the extension number.

 

[ChrisC_3CX]

With a quick google search for that specific's ATA manual I did find what @leejor referring to so I'd take a closer look. What @SweetAction mentioned with park/unpark should also do the job and that would be using only 3CX related dial-codes.