Welcome
Terminology
Using WebHelp
NMS ISDN Messaging API overview
Messaging API programming model
    Natural Access environment
    NMS ISDN Messaging API application overview
    Sending ISDN messages to the stack
    Building ACU message structures
    Sending LAPD messages
    Receiving events and ISDN protocol stack messages
    Receiving messages from the NMS ISDN protocol stack
Initializing a Messaging API application
Call control (ACU configuration)
Data link operations (LAPD)
Messaging API data structures
Function reference
Message primitives
Data types and constants in primitives
isdndemo: Layer 3 call control
lapddemo: LAPD demonstration program
dectrace: Stack traffic analysis tool
itrace: Stack traffic analysis tool
Events, reasons, and errors
Parameters
Sending and receiving raw Q.931 data
Sending and receiving PCS-user information
Timers
NFAS and D channel backup
Modifying the NSF IE
Encoding and decoding the Precedence Level IE