Call Transfer with no call transfer button

[brianza]

I know that there have been various posts on this subject and have read most of the threads without finding the answers required. I am using tigernetcom IP phones and gateway and so far have had decent results with the 3Cx free edition. One of the phone models I am testing is a cordless unit with no transfer or recall button. How would one transfer a call to another extension in this case? Can anyone tell me what is actually happening in the background and how this may be solved?

rgs
Brian