I can't really imagine arguing on the phone with a friend, but I would think...I mean, I'd likely let lousy feelings lie for the evening, but I'd probably check in the next day or so.

Two weeks sounds good.

Assuming she's not in the habit of getting angry with me, I'd probably just forget it and call her whenever I next felt like it.

It depends a lot on the specifics, but I'd want to call her back within an hour or so.

Was gonna say:

I dunno, the question lacks the nuance and specifics you really need to make this kind of decision. Variables include: how long you've known this person, how many times you've dealt with this issue between you before, who has what hot buttons, what's going on in each person's life, what the issue itself was, how much compromise a resolution would require on either part, etc.

Am saying:

Wait, she hung up? In a fit of pique? Yeah, give her an hour or so, maybe a day, and then call/write back and say "I didn't like how we left that."

Two days at most.

It depends on the closeness of the relationship. If causal friend was at fault and made no attempt to call me I might never make the move to call.

Ooh, this is a good one to point out one of my multitude of personal flaws. My first instinct is to say, "I would never call her." Now, realistically, it really does depend on who the person is, if she has done this before, and other circumstances. But I have a gut tendency to just write people off. Like I said, a flaw.

(Can one have a "gut tendency"? I think I meant gut instinct.)

I had this happen to me once. There were lots of other things surrounding the situation, and I was ready to walk away from the (eleven year) friendship anyway. We didn't talk for about six months.

I have a gut tendency to just write people off

I have this too. Generally, I'm pretty patient and understanding, but if I start to feel like someone's just inconsiderate or hostile or taking advantage, I can go all "Ptui! She's dead to me!". I have mended fences with one really close friend who I just stopped talking to for about 9 months, and another I had a conflict with right after high school - reconnected via FaceBook and our 18-year-old problems didn't seem like a big deal any more.

I would wait forever. I'm very stubborn and know how to hold a grudge. If it was her fault and she started the argument and then hung up on me? Nope, not calling.

Funny, this is one of those "my answer to this question says more about me than you might think" I basically have one female friend who I talk to on the phone regularly. Other than that, I talk to my family and local friends in that "do you want to meet at six or seven?" way. I talk to my one firend because she is just not conversational over email and this is my concession to basically wanting to still be friends, but barely. We've been friends since seventh grade and we've taken different paths. She has a career that is killing her and is dying to have a baby and complains frequently and loudy about these things and pretty much always has. She has better days and worse days. On her good days she's funny and interesting and whip smart. She usually emails saying "when is a good time to call?" and I give her a range of times and she'll sometimes call and sometimes not. Meanwhile I dread her phone calls hoping it will be a good talk and not a bad talk.

So, in this question it could only refer to her. And if she called me and then got fighty with me and then hung up on me, it would give me a much-needed excuse to end this phone calling thing and maybe we could shift to email or chat or even written letters. I would never call her back.

I think if it wasn't like, within two minutes, it would be that weekend or something. I don't really understand the option of never calling back. Seems like the ones you don't call back aren't really close friends at all. So it would have to be some damn big kind of fight.

On the other hand—there are some friends I almost never talk to on the phone, yet when I meet them again it's like no time has passed. I could see a rare phone call, fight, hangup, no calls back for months, then shrugging it off like nothing had happened the next time we see each other in person.

Never actually happened to me though, unless you count teenagery arguments about stupid stuff.