Inidvidual consumer doesn't use ISDN.
ISDN is digitalized connection.
Don't confuse standards with physical
carriers. For example, ISDN is a digital
standard. Telephone line is the physical
carrier for ISDN.
ISDN is digitalized connection.
Don't confuse standards with physical
carriers. For example, ISDN is a digital
standard. Telephone line is the physical
carrier for ISDN.