Is divorce via phone three times by saying: "You are divorced, you are divorced, you are divorced" considered a single revocable divorce due to the lack of conjunction, and should the divorced woman observe her waiting period in her family's home if she does not have a marital home and her husband is in another city?

If the husband, by repeating the word of divorce, intends to confirm the first pronouncement or to inform about it, then only one divorce occurs, and his word is to be accepted regarding his intention. As for the waiting period ('iddah (definition)), it should be observed in your parents' home as long as there is no marital home.