Spelling names and reading numbers, dates and codes aloud

A large share of call errors come from information that was said correctly but heard wrongly: "M" heard as "N", "fifteen" heard as "fifty", "the ninth of the tenth" written as the tenth of September. Voice screenings often ask you to read a name, a code and an amount aloud, and to write down what a recorded caller says. This lesson gives the conventions that make this exchange reliable.

The spelling alphabet

Use one standard word for each letter so the listener never has to guess. The set used across airlines, emergency services and most call centres is: Alpha, Bravo, Charlie, Delta, Echo, Foxtrot, Golf, Hotel, India, Juliett, Kilo, Lima, Mike, November, Oscar, Papa, Quebec, Romeo, Sierra, Tango, Uniform, Victor, Whiskey, X-ray, Yankee, Zulu.

Say the letter, then the word: "M for Mike, N for November."

Worked example: spelling the surname "Thiagarajan". "T for Tango, H for Hotel, I for India, A for Alpha, G for Golf, A for Alpha, R for Romeo, A for Alpha, J for Juliett, A for Alpha, N for November."

Numbers: group, pause and distinguish the teens

Read long numbers in groups of three or four with a pause: the phone number 9876543210 is "nine eight seven, six five four, three two one zero." Read "0" as "zero", never "oh", because "oh" can be heard as a letter.

Teens and tens are the main confusion: fifteen and fifty, thirteen and thirty. Stress the second syllable of teens, "fifTEEN", and the first of tens, "FIFty", and when it matters confirm: "that is one five, fifteen."

Dates and times

Say the month as a word, always. "The ninth of October" or "October ninth" cannot be misread; "nine ten" can. Add the day of the week when confirming an appointment: "Thursday, the ninth of October."

Times: use "a.m." and "p.m." or the 24-hour form, and avoid "half seven", which means different things in different countries. "Seven thirty in the evening" or "nineteen thirty" is safe.

Whatever you write down, read it back in the groups the caller used: "So that is order number four four eight, one two. Is that right?" The read-back is where errors get caught at no cost.

Common mistakes

• Spelling an entire word when only one letter was unclear.
• Saying "double" for repeated digits to a listener who may not know the convention. "Four four" is safer.

Practice habit: Each day, read aloud three names, two phone numbers, one amount and one date from any bill or contact list, recording yourself on a phone. Play it back and write down what you hear as if you were the agent. Compare with the source.