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
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
    Timer overview
    France VN6 layer 3 timer defaults
    EuroISDN layer 3 timer defaults
    AT&T E10 layer 3 timer defaults
    Nortel DMS 100 layer 3 timer defaults
    USA National ISDN-2 layer 3 timer defaults
    Australian Telecom 1 layer 3 timer defaults
    Hong Kong Telephone layer 3 timer defaults
    INS-1500 NTT layer 3 timer defaults
    AT&T 4ESS layer 3 timer defaults
    Korean (and Taiwan) layer 3 timer defaults
    QSIG layer 3 timer defaults
NFAS and D channel backup
Modifying the NSF IE
Encoding and decoding the Precedence Level IE