The protocol differentiates the DV datastream (AMBE encoded voice, including 1200 bps messaging) from the DD datastream (Ethernet packets encapsulated in D-STAR headers) by flipping a single flag bit. No DV radios allow this "flip" at the current time, though I think it would have been a great extension to the protocol (unfortunately to be fully compliant with the written spec you must send DD at 128Kbps, kind of silly, it should allow it at any clock rate the two endpoints agree upon). Also, it is unfortunate that the Icom RP2C controller believes that DV is 4800 bps and DD is 128 Kbps. Maybe in a future version this can be changed?
On Tue, Dec 23, 2008 at 10:55 AM, Nate Duehr <[email protected]> wrote: > > > The protocol is not a "smart" protocol that can use the bits for voice > or data in a dynamic way by setting a bit-flag to tell the receiving > radio that "this is an all-data transmission". > > Would have been nice, but it isn't... > > It's a continuously interlaced format. > > Nate WY0X > __. > -- John - K7VE [Non-text portions of this message have been removed]
