[Asterisk-Users] Can I interoperate with public PSTN gateways ?

[David Boreham]

Apologies if this is an FAQ, I wasn't able to find an answer googling:

Will any of the public PSTN/VoIP gateway services (Vonage, Packet8 etc)
interoperate with * ?

I'd like to deploy a box which provides PBX service for analog handsets,
and handles inbound/outbound calls via both analog PSTN lines, and,
say Packet8 VoIP service. I understand that I can do this by connecting
the analog side of an ATA to an analog card in a machine running *,
but I'd prefer to terminate the VoIP traffic directly---I figure that eventually
these services will allow multiple concurrent calls, and at that time I'd
need multiple ATA type boxen, which seems rather silly.

Hops that made sense, and thanks.