You have a client who is planning to implement a toll bypass service for the PBXs. The organization has four locations and the PBXs are a mixture of QSIG- and non-QSIG-capable devices. Which type of services will be available between a QSIG and a non-QSIG PBX?

A.
The supplementary services on the non-QSIG PBX will be available to both devices.

B.
Only basic calls that do not require supplementary services are supported.

C.
The supplementary services supported by the QSIG PBX will be terminated by the gateway and translated to the non-QSIG PBX.

D.
The gateway will translate all the supplementary services for both PBXs.