The best replacement for isdn is dsl.

The best alternatives to isdn are rated as following:
★★★★★  dsl
★★★★  t1
★★★★  ip
★★★  adsl
★★  pstn
★★  voip
★  broadband
★  pots
★  dial up
★  source connect
★  analogue
★  pri
★  modem
  sip
  ismn
  ip video conferencing
  frame relay
  ss7
  asdl

Your alternative for isdn is not listed? Suggest!


No companions for isdn have been suggested so far.
You have in mind a companion for isdn and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of isdn in all years. Click on graph for more.
isdn
dsl
t1