How Should We Address Unauthorized Call Recording at Work? Seeking Advice on Circular Drafting

Good afternoon to all, I need help preparing a circular for our employees. Everyone is using call recording for internal conversations during working hours. Therefore, they are not supposed to engage in any call recording without prior permission from the management.

Guidelines for Call Recording

Write what you have just told us. No call recording without management permission. Also, include penalties for transgression of the rules. Keep it simple. You are not writing a novel, just a simple instruction. If there are too many words on the page, people won't read it.