The operational support systems (OSS) of any major telecommunications opera
tor are the underlying resource for the management and delivery of all its
communications services. It is used for handling direct customer interactio
ns (helpdesk, orders, fault handling, billing, etc) and for the processes i
nvolved in managing the services and the networks on which they are support
ed Many such services and networks are rapidly evolving in the Internet pro
tocol (IP) era with a consequent requirement for radical improvements and s
treamlining in the design of the OSS. This paper describes some of the chal
lenges faced by BT in the quest to design IP OSS for future operations.