Content sWhat is ISDN? .........................................................................................................................4
ISDN Communication Ch annels ... ..................... ..................... ..................... ..................... ........................6
Connecting to ISD N - BRI and P RI ................... ................... ................... ................... ................................ 8
What is Multilink PPP ? ......... ..................... ...................... .................. ..................... ..................... .................. 9
What is BACP/BOD? .. ..................... ..................... ................... ..................... ..................... ................... .........10
What is DBA? ............ ................... ..................... ..................... ................... ..................... ................................11
What is Always On / D ynamic ISDN (AO/D I)? .................. ..................... ..................... ..................... ...12
What is Data Compressi on? ................. ..................... ..................... ..................... ..................... ................ 13
Locating AT Commands .......................................................................................................14
AT Command Groups ...........................................................................................................16
Alphabetical List of Supported ATCommands .................................................................17
General AT Commands ........................................................................................................29
ISDN Configuration Commands .........................................................................................31
COM Port Configuration Commands ..................................................................................36
Call Control Commands .......................................................................................................39
V.120 Configuration Commands ........................................................................................42
V.110 Configuration Commands ........................................................................................44
Profile Commands ...............................................................................................................45
Multilink PPP Commands ....................................................................................................46
Endpoint Discrimin ator Class/Address . ..................... ..................... ................... ..................... .............48
Always On / Dynamic ISDN ATCommands .........................................................................49
Utility Commands ................................................................................................................54
S-Register Commands .........................................................................................................57
Analog Device Commands ..................................................................................................59
Mini-monitor Commands ....................................................................................................62
AT Command Result Codes .................................................................................................63