Server Fault is a question and answer site for system and network administrators. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I am ordering a new internet connection in the United Kingdom and wondered what's the difference between:

  • 10mb leased line

  • 10mb EFM (Ethernet First Mile) line

They both seem to offer equal contention and the same speed but the lease line is £30 more a month.

share|improve this question
When you say equal contention, I assume you mean none? Leased lines generally don't have any contention. I don't have any EFM circuits so I can't comment on those, I'd be interested to know if yours is offered with contention. – jwbensley Jan 11 '12 at 9:09
up vote 1 down vote accepted

Are they from the same company? Do they have the same terms and conditions?

It might be that the leased line has a stricter contract, with for example uptime guarantees or other clauses that the supplier has to meet.

Are they both symmetric lines do they both include unlimited bandwidth?

They are lots of questions which would need answering, which we can't help you with as we don't have the companies details and their individual terms and conditions.

share|improve this answer
thanks, I will look at all these points and come back with some answers! – Alex Jan 10 '12 at 10:57

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.