sbiddle: Yes. But that's not what I'm talking about.
Orcon aren't doing VOIP over DSL. Orcon+ voice is VoIP to the cabinet and then POTS to the house - exactly the same as Telecom's VoIP to their ISAM and POTS to the house.
Telecom's solution isn't VoIP to the ISAM and POTS to the house. It is, as gigereejit said, delivered off an RGW (with built-in ATA).
gingereejit: What your suggesting is some sort of POTS->SIP/H.248 switching done at the DSLAM in the cabinet, such as ISAM-V like tecnology with a SIP->PSTN gateway at the CO. Which is POTS Emulation and needs an AGCF to swtch the traffic onto the underlying IMS platform
If it's SIP on the access node (e.g. DSLAM) , you don't need an AGCF.
freitasm: This was deployed by Orcon with their first LLU in Auckland months ago already - the first in the world actually.
Orcon was not the first in the world to deploy a VoIP DSLAM PSTN Emulation service. The first to deploy Siemens to do it, maybe, but certainly not the first in the world.