Can you be a bit more specific?
Usually there are times in the calls when open contributions are welcome.
"So what does everyone think about that?"
"Hi, this is Barb. I'd suggest... [ and give my thoughts] "
It's helpful to identify yourself when you start to speak, because people can't see you and don't know who is speaking."
If you need to interrupt the speaker for some reason, you can try "Hi - Matt... Sorry to interrupt. This is Barb, and I have those numbers right here. It was actually $700,000 for the first quarter and $500,000 for the second. I think you may have said them the other way around."