Alcatel Business Communications (ABC) is a proprietary communications protocol written by Alcatel-Lucent that is based on QSIG. ABC is supported over a variety of network types: IP, ATM, frame relay, PSTN, ISDN, or leased line.
The ABC protocol is based on four modules and offers the following services:
- ABC-F: Telephone Features. Provides telephone feature transparency; features available in a single system are available across the entire network.
- ABC-A: Applications. Offers network-wide applications as both centralized and distributed solutions.
- ABC-R: Routing. An adaptive routing mechanism that optimizes the size of network links and improves security. Designed to use: least-cost routing, automatic route selection, forced on-net, break-in, break-out, and link optimization on transfer.
- ABC-M: Management. Guarantees consistency of databases among all Alcatel OmniPCXs. It is used to inform the whole network about configuration changes and provides centralized alarms.