C.L.I. ?

[spekesoftly]

Just a quick question for the Internet/ISP experts please. I believe some ISPs only allow connection via one telephone number (ie - your home number, say). Am I correct in thinking that this is enabled by Calling Line Identification? (or something like that)

Can anyone please direct me to where I could find a list of ISPs that do/do not restrict usage in this way?

Thanks for any replies, and a Very Merry Christmas to all PPRuNers <img src="smile.gif" border="0">

[ 24 December 2001: Message edited by: spekesoftly ]</p>

[micheal]

I have no problem using BT Openworld Anytime from a number of places... work, home on my various desktop machines.

I guess I could not log on at two locations at same time !

But works a treat.

[TwinAisle]

I've seen this limitation noted by a few ISPs, but being honest, I don't think they can apply it. Eg, I used to use a dialup connection with one of the ISPs who (certainly used to) quote this clause, but my CLI is disabled (my job means I don't want clients having my home number, and dialling 141 before the call was error-prone). Absolutely no probs. I think it may just be a case of "1 account, 1 SIMULTANEOUS connection", and a fairly cack-handed way of trying to stop several people using the same account.

The only exception, now I come to think of it, is with mail accounts, which typically will not accept sender end mail from a different ISP. Example - if I use Outlook with my BT Openworld account, but dial in using freeserve, BTO get arsey and refuse the post... the reverse is also true.

[RW-1]

Twin,

I have not seen CLI, general dial up modem connections typically have a usage restriction as to multiple logons to the same pop server (pop in this case being point of presence, not to be confused with a mail pop server).

I can think of one instance where this may have been in application is where no authorization may be in place, such as a dedicated server connection, we would call that number constantly looking to connect, some dedicated ISDN services also work that way.

We used to have people who would "shotgun" modem connections to get higher bandwith, and took that away, with the exception of dual channel ISDN, whose usernames were listed in a separate lookup table for those servers to allow dual channel logons.

However for mail, smtp severs typically go by IP address tables (the username and password you enter in a mail program is not for smtp, but for pop only), then if applicable they go to lists of acceptable sending domains.

For example, our hosting company allows our customers to send thru our SMTP, they could send out any mail thru them, however as they are not on our "network" (we are no longer an ISP) they must check the pop server of their hosted website account before they are allowed to send out, this confirms that they are acceptable. (I won't detail this, but that is how it is addressed in the shared hosting environ here.)

Cheers!

[Specaircrew]

A good place to start is <a href="http://www.ispreview.co.uk" target="_blank">www.ispreview.co.uk</a>

A lot of 'freecall' ISPs use this system to stop you allowing your mates to get free internet calls using your username/password and some ISPs (eg Pipex) require you to have a compatible telephone exchange. I tried dialling from my parents house over Xmas and it rejected my call so they obviously do use CLI. They should always supply a 0845 number for use when away from home though.

[malanda]

I use AngliaNet or FreeNetName when I need to dial from a line that doesn't provide CLI. These are both 0845 numbers - sadly FNN don't accept new subscribers any more.