Do you need to ring me about something urgent?
Send me a TEXT MESSAGE beforehand to alert me that your call is coming. If I know your call is coming it's less likely I will miss it.
Do you wish to find me laser-focused on the topic you need to discuss as soon as I pick up the phone?
Please consider introduce the TOPIC OF THE CONVERSATION in your text message.
The above helps me get ready for your call.
SPEAK SOON!