Welcome
Terminology
Using WebHelp
NMS ISDN Messaging API overview
Messaging API programming model
Initializing a Messaging API application
Call control (ACU configuration)
Data link operations (LAPD)
    NMS ISDN state machine (LAPD configuration)
    Initiating a data link
    Responding to a data link establishment request
    Sending messages across an established link
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