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Community Member

2811 T1 transport

Hello, I am installing a 2811 with a couple of VWIC-2MFT-T1/E1 cards. I am trying to found out what the transport range is for this card. I was told that it will only travel around 650 Ft, I hope this is not true. Can someone point me in the right direction were the documentation is?


Re: 2811 T1 transport

A T1 delieverd by a carrier/provider/telco is good for ~6000 feet per span. The "last mile" span to the SmartJack / NIU is usually ~3000 feet, so when the smartjack is looped-up for testing, it stays withing the 6000 foot limit.

Beyond 6000 feet, repeaters are necessary.

Here's the nuance: The signal delivered by the carrier / Provider / Telco is NOT a "T1" signal, it's HDSL ... different signaling that can go 6000+ feet that is converted to a "T1/DS1" signal at the Smartjack/NIU.

A true T1/DSX1 is limited for distance. I don't recall exactly the distance, but I believe it's 650 feet.

Were you going to light up some dry copper for a longer haul? If so, you may also want to invest in some "T1 Line Drivers" from someplace like Black Box (

They can frequently carry the signal for thousands of feet to perhaps miles.

Good Luck


Community Member

Re: 2811 T1 transport

Thanks for the comments Scott,

I have two offices right around 7000ft, I was hoping to eliminate my T1 transport system (TXport 3030) and go 2mf card to 2mf card.

I would have thought that the card would have a short and long setting.

Hall of Fame Super Gold

Re: 2811 T1 transport


at these distances, the one thing you can use, is G.SHDSL. Cisco makes an HWIC card using from one to four pairs, so you could get 8 mbps between sites. The alternative, is wireless.

Hope this helps, please rate post if it does!

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