The following are some useful links where further information can be found on ASN.1:
- ITU-T ASN.1 Project: Links to the ITU-T ASN.1 Module Database and other up-to-date information on standard activities and other information related to ASN.1.
- Packetizer: Packet-switched conversational protocol information site. ASN.1 specs for the latest H.323 specifications can be downloaded from this site.
- Introduction to ASN.1 and the Packed Encoding Rules: Quick overview of ASN.1, BER, and PER. ASN.1
- Tutorial: A tutorial covering the basic concepts of ASN.1
- Wikipedia Definition of ASN.1