AE Services support the following TelURI formats. The preferred format is E.164, except in cases where the extension bears no resemblance to the E.164 numbers.
Format
Example
E.164
tel:+13031234567
E.164PlusExt
tel:+13031234567;ext=1234567
extOnly
tel:5389000;phone-context=<domain>
where <domain> can be any organization’s domain name
