RCA 26958 manual Eleven digits

Available formats include:

Number of digits	Explanation	Example
Eleven digits	long distance code “1”
	+ 3-digit area code
	+ 7-digit telephone number.	1-317-888-8888
Ten digits	3-digit area code +
	7-digit telephone number.	317-888-8888
Seven digits	7-digit telephone number.	888-8888

NOTE: If the phone company does not supply all ten digits of an incoming caller’s number, you will not be allowed to adjust the format of that number.

68