Utilizing the experience of the library of California State University (CSU), Chico in servicing off-campus students who receive instruction via a two-way audio and one-way video communication network called the Instructional Television Fixed Service (ITFS), this paper examines the role that extended campus library services can play in the process of developing and refining on-campus library services. A brief description of ITFS precedes an outline of benefits which have accrued to the central library in the process of servicing the program. These benefits include: (1) greater library involvement of faculty members; (2) increased library awareness of student needs; (3) higher usage of online bibliographic searching; (4) improved collection access and development policies; (5) expanded bibliographic instruction to patrons in use of the library; and (6) enhanced library public relations activities. The library use of videotape recordings for ITFS is highlighted. Finally, consideration of the coordination of off-campus library services leads to recommendations that responsibility for such services be placed in an administrative office equivalent to an assistant director of the university library, and that this responsibility include services to all off-campus community groups involved with the library, particularly alumni. (Author/ESR)