IMHO - You can suggest a new version of the ISUP encoded in BER/DER/CER/PER/XER - but for the existing ISUP the ASN.1 community came up with ECN.
ASN.1 is a solid fully proven way of describing a protocol on the abstract layer. The history of the ISUP dates back to the Telephone User Part (TUP) that dates back to - say 1980. (yellow books of CCITT if I recall correct). Its encoding scheme dates back before ASN.1. So the challenge was to describe the encoding rules so it would match the existing TUP and ISUP specs. Steen > -----Original Message----- > From: Banibrata Dutta [mailto:[EMAIL PROTECTED] > Sent: 28. februar 2005 05:48 > To: 'Steen Oluf Karlsen'; 'Olivier Dubuisson'; 'Casper' > Cc: [email protected] > Subject: RE: [ASN1] ASN.1 spec for ITU ISUP Q.763 > > > Well, we can have the Abstract-Syntax, but shall we mot > need to define a new > "encoding rule" to get the ISUP encoding, which is neither > BER/DER/CER/PER/XER ? > > - b.dutta > > > _______________________________________________ ASN1 mailing list [email protected] http://lists.asn1.org/mailman/listinfo/asn1
