TLG don't have any ISDN equipment currently. We rely on each member
providing the interface between our router and the line intself;
modems or DSUs. (Our FAQs explain why, but basically low overhead
and low cost.)

If you are willing to provide ISDN equipment that can connect to
our system (V.35 or RS-232 interface), and can arrange ISDN Centrex
service in your own name, with a Centrex extention on our physical
premises, we will gladly provide you with a connection to TLG via
ISDN. TLG does not install or "own" the phone lines used to connect
to us; these are installed and paid for by each member. This lowers
your cost, and our exposure to unexpected long-distance calls, etc.

Note however we don't have provision for "part time" IP, or circuit
take-down upon idle, etc. TLG assumes you're connected 100% of the
time; if you want to use ISDN to make non-full-time connection to
the Internet via TLG, you will have to arrange for additional
support, such as MX mail forwarding, domain name service (this last
we can do for you).

Our pricing structure now assumes 100% utilization; we will charge
our 56K rate of $325.00/month for 64K ISDN, or $500/mo for 128K.