Packet Data over IS-95
IS-99/657/707 define a Radio Link Protocol for sending packet data over IS-95 CDMA
RLP breaks variable-length PPP packets into one of the 4 frame lengths supported by IS-95 Rate Set 1 or 2 traffic channels
RLP senders add 8-bit seq numbers to frames
RLP receivers NAK missing frames and the senders retransmit them
RLP is “mostly” reliable; it does not try to provide perfect reliability