Need guidance for elevator pitch

What does an ideal elevator pitch/background spiel in a networking call look like?

• how long should it be?
• should I talk about why my major?
• should I talk about why IB?
• extra curriculars?
• personal interests?

I've talked about all of the following in my networking calls so far but I feel like it takes too long (close to 2 min of the call) and some people might lose interest in the middle of it.