Practice before you dial, then dial
Reading about selling on the phone does nothing until you have said the words out loud to a stranger. These drills get you to that point faster.
The technique
Practice in the order the call happens: opening ten times, then discovery questions, then the offer sentence, then the close. Do each aloud, standing, at the pace you intend to use. Ten minutes of this beats an hour of reading, because the thing that fails on a real call is your mouth, not your understanding.
Opening ×10 → two discovery questions ×5 → offer sentence ×10 → close ×5 → one full run-through end to end. Then dial immediately, while it is still in your mouth.
Sellers who warm up before their first call of a session convert measurably better on calls one to five, the ones everyone else writes off as warm-up.
Why aloud, standing, at pace
The thing that fails on a real call is your mouth, not your understanding, which is why silent practice trains almost nothing you use. Reading an opening and saying an opening are different motor skills. Only one of them is on the call with you. Practising aloud, standing, at the pace you actually intend to use, is rehearsing the real skill, and the strangeness of doing it alone in a room is precisely the strangeness the first real call no longer has.
The first session after the warm-up
Warm up, then dial within a minute or two, while the words are still in your mouth. A warm-up followed by twenty minutes of choosing a playlist is a warm-up wasted. Expect the first three calls to be stiff anyway, the warm-up moves the stiffness off paying customers, it does not abolish it. Log where each call died against the five beats from lesson one, because after ten calls that log is a syllabus written specifically for you.

What goes wrong here
Warm up, then take a live campaign tonight
Questions this lesson owns
How do you warm up before making sales calls?
Ten minutes, in the order the call happens: the opening ten times, two discovery questions five times, the offer sentence ten times, the close five times, then one full run-through, all aloud, standing, at the pace you intend to use. Then dial immediately, while it is still in your mouth. The warm-up is the difference between learning on your first calls and spending them.
How many calls does it take to get good at telesales?
There is no honest number, and any course that gives one is selling something. What is true: the improvement is front-loaded into the calls you review, not the calls you make, so ten calls with playback and a died-at-which-beat log teach more than fifty without. Calls four onwards of any session are where the learning is, which is exactly where most people stop.
How do you practise cold calling without a live campaign?
Say the words out loud to yourself, which is the part nearly everyone skips. Reading an opener silently teaches you nothing, because what is being trained is a behaviour under mild stress and you cannot rehearse that by reading. Ten minutes of speaking your opening and your answer to the most common objection does more than an hour of study.
Should you record your own sales calls?
Yes, where the campaign and the law allow it, and listen to your openings before anything else. Playing back only the first ten seconds of three calls is usually enough to hear the recitation you cannot hear while you are speaking. Most sellers need to hear it once to stop doing it.
What should you listen for when reviewing your calls?
Where the call died, and what you were doing when it did. Note the beat you were in rather than the words you used, because the same beat tends to fail repeatedly and that is what tells you which part of the craft to work on next. Pace and interruptions come second. Structure comes first.