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
    ISDN_PROTOCOL_PARMS_LAPD parameters
    ISDN_PROTOCOL_PARMS_Q931CC parameters
    services_list field
    in_calls_behaviour field
    out_calls_behaviour field
    acu_behaviour field
    ns_behaviour field
    qsig_source_party_nb_type field
    qsig_source_type_of_nb field
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