ADSL vs T1

[mcanedo]

All I want is internet connection for the next servers WWW, POP3, SMTP, VPN, and of course www clients.

I can get a 2Mb/524Kb ADSL or a T1 (complete or fractional).

The cost of the ADSL is 1/4 of the T1 (and I wont need a router), is there a reason why I should choose the T1?????

What are the advantages of the T1?

Thanks in advance

Miguel

[dwayne]

You'll still need a router if you intend on having more than one machine sharing the ADSL line. This can be a dedicated router or it can be a computer with 2 network cards (Linux with ipchains can do this using IP masquerading and NAT).

What I've been told is that the DSL modem in your home/office connects to a DSL modem at the telco office. From there it may hit a router, or it may go into a switch before hitting hitting a router, or it may get fed into another computer that acts as a multiplexor before hooking into another switch or router.

My ISP tells me that the T1 is connected directly to their internet backbone. I have a fractional T1 (768/768) but can't compare the speed to my ADSL (768/128) since my ISP hasn't given me all the info I need to utilize my fractional T1.

[mcanedo]

thanks, ok thats what I mean, I can use a PC as the Internet Gateway, and thats more inexpensive than the router itself.

[gbendov]

I'm a little confused - I currently have multiple PC's connected to my ADSL without a router (My ISP uses fixed IP addresses to accomplish this -I use an inexpensive switch which to allows the sharing of the physical DSL connection).

Isn't part of the issue whether the ISP uses a fixed IP address system or DHCP? If they don't have fixed IP addresses, then some other hardware running NAT is required - I understand that NAT is typically run on a router, but can it be run within a typical MS peer to peer network? I would like to get rid of the need to constantly set and reset IP addresses?

Thanks for your help.

[mcanedo]

Im not sure if I understood your question, but a NAT does not need to be on a Router. It can be on a PC that also can act as DHCP server, besides de DHCP you can use your fixed IP addresses.

And back to my question, what are the advantages of the T! over an ASDL :-) ??

[arthurmoseley]

T1 is a dedicated (and symetrical) pipe - just for you,

ADSL bandwidth (as well as asymetrical) is typically shared with other ADSL customers - contention ratios of 20:1 and 50:1 are common (in the UK anyway)

ADSL is not really suitable for webhosting either due the A part of ADSL

regards and cheer

Arthur

[stsalina]

The real issue in this comparison is the service level you'll get from the ISP. All ADSL contracts are best effort with no guarantees. If any packets are passing many service providers will look no further in troubleshooting degraded ADSL service. The T1 contract (and fT1) will have an SLA that will provide you some leverage in enforcing throughput performance. Like most things, you get what you pay for. If you can live with less reliability/availability then savings associated with the ADSL service is a "no-brainer". If passing data is a requirement for your business then the ADSL decision could be a career limiting choice.?!