GENERAL INFORMATION =================== The 3GPP TS 36.413 version 14.4.0 S1 Application Protocol (S1AP) APER decoder. Invoking `make` will compile the ASN.1 specifications from the ../s1ap-14.4.0.asn1 file. OBTAINING THE S1AP SPECIFICATION ================================ To obtain a different version of S1AP ASN.1 specification, you should go to http://www.3gpp.org/ftp/Specs/html-info/36413.htm and download any version of S1AP specification you like. A .ZIP file with a Microsoft Word .DOC files will download shortly. You should extract the ASN.1 modules from the chapter 9 of that .DOC file. Be careful not to copy any preambles, chapter titles and other non-ASN.1 text. s1ap-dump USAGE =============== The s1ap-dump utility may be used to dump the contents of a APER-encoded S1AP protocol data unit. Since S1AP specification contains multiple PDUs, a PDU must be selected manually using -p command line option: ./s1ap-dump -iaper -p S1AP-PDU message.per The list of recognized PDUs may be obtained using `-p list`. The full list of recognized command line options may be obtained with > ./s1ap-dump -h