i received my new upgraded hughes tivo and hooked it up

the regular programming was activated with no problem,
but i cannot dial in to initialize the tivo service
i keep getting a "failed to connect" message

i had the same problem with a previous hughes receiver
but a sony receiver works just fine on the same fone line
we have earthilnk true voice telephone service at home

we use the ,#034 prefix with the sony, but it doesn't work for the hughes
nor does ,#019

the new receiver works fine (dials in ok) from another location
with old-fashioned bellsouth fone service

have you had any reports of hughes tivo units not being able to connect with earthlink truevoice service
and is there any known fix