32206: SIP: Invalid From number (caller ID)
ELASTIC SIP TRUNKING
ERROR
From number (caller ID) must be valid and not on the do-not-originate (DNO) list.
Incorrect From number entered
Verify the number was entered correctly.
https://en.wikipedia.org/wiki/E.164
https://en.wikipedia.org/wiki/North_American_Numbering_Plan