Interfacing and Controlling the RIM 801D Protocol support: Summary
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RIM 801D OEM Radio Modem – Integrator’s Guide
Summary
LLI is an access number used to identify a radio modem. Each radio modem
on a wireless network is assigned a unique LLI.
SDU is a packet of data that is exchanged between the RIM 801D OEM
radio modem. and the DataTAC wireless network.
NCL is a communication protocol that provides for the reliable transfer of
information across the serial link connecting the RIM 801D to the host
device. This data can have different meanings, depending on the frame type
in use. For example, the data can be intended for wireless transmission, or it
could request the current radio status. The NCL frame, which contains data
and control sequences, is used only to communicate across the serial link,
and is not transmitted to the wireless network.
RAP performs the same function as NCL, but with less extensive error-
checking. Both NCL and RAP are built into the RIM801D.
