The best replacement for pri is t1.

The best alternatives to pri are rated as following:
★★★★★  t1
★★★★  bri
★★★★  sip
★★  pan
★★  pots
★★  voip
★  cas
★  sip trunking
★  pbx
  isdn
  did
  prd
  sip trunk
  e1
  dss
  analog lines
  pots lines
  ss7
  pstn
  ds1
  npr
  t-1
  ip flex
  pra
  bri lines

Your alternative for pri is not listed? Suggest!
Speaking about pri, one probably shouldn't forget about sip trunk.

Other search terms related to pri and their ratings are:
★★★★★ sip trunk
You have in mind a companion for pri and it is not yet here? Propose!



Google Trends

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