What type of landline telephone line can I use to call?
To an analogue connection, link 1 telephone number with which you call. An advantage to analogue calling is that the phone always works, even if the power fails. On the other hand, it is not possible to link several telephone numbers, so you can only be reached on one number. When you are talking on an analog line, a new caller hears the busy tone. Do you only have an analog connection? Then the use of the Internet during calling is not possible.
With an ADSL connection you still call analogue, but in this case your telephone line is split into a telephone line and an internet connection. The advantage of an ADSL connection is that you can use the internet while calling. On the other hand, you still only have 1 telephone number and are therefore available for a single contact at the same time. This makes ADSL more often used at home than for business telephony.
ISDN is a digital connection with not 1 but 2 telephone lines, making it possible to use the Internet and make calls simultaneously. The number of telephone numbers that you link to this depends on which subscription you have taken out with your provider. On the other hand, ISDN is quite expensive, which means that usage has declined sharply. That is why ISDN stops. Do you want to know when you use this type of telephone line? Then contact your provider.
VoIP stands for Voice over IP, so internet telephony. Instead of calling via an analogue or digital line, you can call VoIP via the internet. This form of calling has the advantage that the call quality is better than with other lines. You also call against a lower fixed monthly amount. On the other hand, if you have a power failure, your telephone connection is out, because VoIP equipment is electric. Do you want to know what else you use VoIP for? Then read the article below.