1. Glossary and Terms (Download PDF)

2. A usful list of Acronyms 
A B C D E F G H I J K L M N O P Q R S T U V W X   
IAM     Initial Address Message (SS7)
ICMP    Internet Control Message Protocol
ID      Identity/identifier
IEEE    Institute of Electrical and Electronics Engineers
IETF    Internet Engineering Task Force
intserv Integrated Services
IP      Internet Protocol
IPX     Internetwork Packet Exchange
ISDN    Integrated Services Digital Network
IS-IS   Intermediate System to Intermediate System
ISP     Internet Service Provider
ISUP    ISDN User Part (SS7)
ITU     International Telecommunications Union