Look at a Hatteras hn400 and lpu You can get about 5mbs/pair using g.shdsl. pairs can be bonded to add capacity (assuming at least 2 pair for t-1). The repeaters fit in a standard 248 closure.

From: NANOG <nanog-bounces@nanog.org> on behalf of Baldur Norddahl <baldur.norddahl@gmail.com>
Sent: Wednesday, December 12, 2018 4:19:21 PM
To: nanog@nanog.org
Subject: Re: Extending network over a dry pair

Rent a cable plow and make a quick run of fiber during the night. Nobody will notice.

:-)

6 miles is too far to get any speed on a phone line.