Should i wait for him or end it now through a phone call?

My bf asked for space to think about the relationship. He said that he feels like he is being unfair of not reciprocating the level of love that i am giving him. I agreed and it's been 6days with no communication and it hurts like hell. I don't know if i can still bear the pain of not talking to him. I still do love him, but i dont want to tie him up and make him stay if he doesn't want to. I asked him if we could meet and talk but he always say he still doesnt know if he's ready. Is it okay to do it through a phone call? Or should i wait for him to be ready to talk?