POSTERS USED ILLUSTRATE PHONE

Brand	Owner	Address	Description
PHONEFACTS	MINNESOTA MINING & MANUFACTURING COMPANY	ST. PAUL, MINN.	POSTERS USED TO ILLUSTRATE PHONE NUMBERS, ADVERTISEMENTS AND OTHER INFORMATION OF INTEREST;
	Where the owner name is not linked, that owner no longer owns the brand

Technical Examples

A dual phone, and method of telecommunicating by using the same, have an ISDN phone and IP phone. The dual phone recognizes one of ISDN mode, IP mode, and external connection mode from a user input, and connects or releases a voice path between an ISDN phone and the IP phone based on the recognized mode, thereby enabling calling between an external ISDN phone and an IP phone.