You get a phone call while you're on the line with someone else. You answer it, but you want to finish the other conversation first.
Rina, let me call you right back.
You've been talking with an old friend on the telephone. You want to finish the conversation, so you say:
OK, well, I'll let you go.
conversation enders, telephone, 日本語サポート 
You got a telephone call from your nephew. You've been talking for a few minutes, but now you want to end the conversation. You usually don't like long phone conversations. You say:
You know me: I'm not one to chitchat on the phone for too long.
personality, set phrase, telephone, 日本語サポート 
You had to call your cable company because of a problem with your bill. They made you wait on the phone for a long time. You're complaining about this experience to a coworker. You say:
They had me on hold for like 20 minutes!
annoyed, casual, complaining, telephone 
You were talking to your sister on the phone. The call suddenly ended. You think it was an accident, but when you call your sister back you want to joke with her, so you say:
You hung up on me!
family, joking, phrasal verb, teasing, telephone 
You call a client at her office. She doesn't answer the phone. Instead, you get sent to her voice mail. Her message says:
Hi. You've reached Misty. I'm not available to take your call right now, but please leave a message and I'll get back to you as soon as I can.
You're having a meeting with your coworker Brenda in her office. You think of a question that you want to ask another coworker, Amy, about, so you call Amy from Brenda's telephone. When Amy answers, you say:
Hi Amy. This is Zack.
demonstratives, introductions, phone, telephone 
You're talking to a friend on the telephone. Her voice sounds deep and scratchy. It sounds like she's sick. You say:
You sound horrible!
You're talking with your friend on the telephone, and the signal is breaking up. She said something, but you didn't hear what she said. You ask:
What was that?
You wanted to call your friend, but instead you called your landlord's phone number instead by mistake. You know your landlord pretty well. When she answers the phone, you say:
Oh, hey Debbie. Sorry, I meant to call someone else.
interjection, mistake, phone, stative verb, telephone 