Issue No. 03 - May/June (1999 vol. 3)
DOI Bookmark: http://doi.ieeecomputersociety.org/10.1109/4236.769423
<p>A novel architecture supports flexible integration of IP-based telephony services with legacy circuit-switched services by defining the means for convergence at the communications-control layer of the network, rather than the transport layer.</p>
C. Catania and D. Rizzetto, "A Voice over IP Service Architecture for Integrated Communications," in IEEE Internet Computing, vol. 3, no. , pp. 53-62, 1999.