Howto:Is Simple Packet Relay Transport (SPRT) Protocol for Modem over IP supported by your analog gateway/adapter?
FAQ:
Is Simple Packet Relay Transport (SPRT) Protocol for Modem over IP supported by your analog gateway/adapter?
Answer:
No we do not support the SPRT protokoll.
We support pass through with modems (we use codec g.711).
See also the wiki entry how to use a modem with IP21.