hey,
But this all results in a sh1te load of 48 port gateways (power is not
a concern), but wondering if there is another solution that is more
cost effective? Seems the regular NEC's Siemens and so on might have
an option but I can imagine it will be far more expensive than a bunch
of individual gateways.
Huawei was already suggested and Nokia ISAM also works very well for
your application
https://www.nokia.com/networks/products/intelligent-services-access-manager-isam-voice/#overview
Majority of the small consumer gateways (including the 48p ones) will
not work on long loops, they are ment to be used inside a building etc.
--
tarko