Years ago I got my aids. It took me forever to get the hang of putting the phone by my ha microphone rather than the regular way.
If your aids are not automatic press the tcoil switch (should you have one) and hold the phone earpiece at the level of the mic. You may have to move the phone around a bit to find the best position. If you have a phone with a volume level you can also adjust it.
Oh, and make sure the friend who calls understands what is going on. Else you may have a very frustrated friend.
Or you could just use relay services, a pager or emails. My personal favorite is relay and pager. My cell/pager has relay and email on it, so easy.
Good luck!