[SOLVED] Home Highway to be discontinued

Just received a circular from BT saying that they will discontinue Home
Highway on 28 Feb 2007.

I use this because it gives me two analogue phone numbers, and allows ISDN
connections to other ISDN users. Quite separately, I have another line
which provides ADSL.

What alternatives are there that will provide the equivalent IDSN service,
with two analogue numbers and a digital number, and allow two simultaneous
calls on the same pair?

I have clients who use HH for a small business - the two separate analog
numbers are essential, one for voice, the other for fax. The internet
access requirement is generally for email, so the 64 k speed and instant
connection of ISDN is perfectly adequate - naturally the ISP provides a
flat-rate account. Larger downloads can run overnight because of the
reliability of ISDN.

What can I recommend for them?

--
Graham