User's Manual

Appendix B – SDK NCL-API and Port Server_____________________ Boomer-III User Manual & Integrator’s Guide
Copyright Wavenet Technology © October 2003 98 BM310012WT04
request (if not an event), and passed to the router with the
corresponding tags.
Link Layer
The RPM communicates with a PC via a standard communications port
and a user supplied RS232 to CMOS level device. For the Pocket PC
(PPC) the RPM communicates via the PPC extender port UART. The
PPC performs an auto detect and wakeup when an attached modem
receives some data and the PPC is in suspend mode.
Application Interface
 Opening a Session
Applications are required to first open a session with the VDD by
calling the API function ‘VDDOpen()’. All other API functions will
return an error unless an open session with the VDD was established.
If successful this operation will result in the creation of two MSMQ
queues for use by the client. One MSMQ will be used to send messages
from the VDD to the client and the other for messages from the client
to the VDD. Note that the client does not deal with MSMQ queues
directly because all operations are wrapped in API calls.
Prototype:
int VDDOpen(void)
Description:
Opens a session with the VDD.
Input:
 none
Output:
 Return value = 0 Operation was successful
 Return value ≠ 0 Operation failed. Value specifies the error type