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)
Messaging API data structures
Function reference
Message primitives
Data types and constants in primitives
    User rate values
    Service values
    Number type values
    Plan values
    Screening indicator values
    Redirecting reason values
    Location values
    UUI protocol discriminator values
    Signal values
    Network-provided clearing cause values
    Clear code values
    Facility code values
    Action code values
    Mode code values
    Error cause values
    Progress description values
    Charging type values
    Endpoint ID values
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