How to make Alexa speak phone number

I want Alexa to say phone number as digits not as its value.

Ex:

[Alexa] the contact number is 9 8 7 6 5 4 3 2 1 0.

But now Alexa says as

the contact number is nine billion eight hundred seventy six million five hundred forty three thousand two hundred ten

Thanks

Solution

Use interpret-as="telephone" attribute of say-as tag of SSML to interpret the number as a telephone number.

Ex:

<speak>
    the contact number is <say-as interpret-as="telephone"> 9876-543-210 </say-as>
</speak>

interpret-as="telephone" will interpret a value as a 7-digit or 10-digit telephone number. This can also handle extensions (for example, 2025551212x345).

It's always a good idea to include "-" in between phone number to give breaks while saying the digits.