TY - GEN
T1 - Measurement techniques in on-demand overlays for reliable enterprise IP telephony
AU - Karacali, B.
AU - Karol, M.
AU - Krishnan, P.
AU - Kumar, K.
AU - Meloche, J.
PY - 2006
Y1 - 2006
N2 - Maintaining good quality of service for real-time applications like IP Telephony requires quick detection and reaction to network impairments. In this paper, we propose and study novel measurement techniques in ORBIT, which is a simple, easily deployable architecture that uses single-hop overlays implemented with intelligent endpoints and independent relays. The measurement techniques provide rapid detection and recovery of IP Telephony during periods of network trouble. We study our techniques via detailed simulations of several multi-site enterprise topologies of varying sizes and three typical fault models. We show that our proposed techniques can detect network impairments rapidly and rescue IP Telephony calls in sub-second intervals. We observed that all impacted calls were rescued with only a few relays in the network and the run-time overhead was low. Furthermore, the relay sites needed to be provisioned with minimal additional bandwidth to support the redirected calls.
AB - Maintaining good quality of service for real-time applications like IP Telephony requires quick detection and reaction to network impairments. In this paper, we propose and study novel measurement techniques in ORBIT, which is a simple, easily deployable architecture that uses single-hop overlays implemented with intelligent endpoints and independent relays. The measurement techniques provide rapid detection and recovery of IP Telephony during periods of network trouble. We study our techniques via detailed simulations of several multi-site enterprise topologies of varying sizes and three typical fault models. We show that our proposed techniques can detect network impairments rapidly and rescue IP Telephony calls in sub-second intervals. We observed that all impacted calls were rescued with only a few relays in the network and the run-time overhead was low. Furthermore, the relay sites needed to be provisioned with minimal additional bandwidth to support the redirected calls.
KW - IP telephony
KW - Measurement techniques
KW - Mid-call redirection
KW - Overlay networks
UR - http://www.scopus.com/inward/record.url?scp=42549161586&partnerID=8YFLogxK
U2 - 10.1109/ICC.2006.254777
DO - 10.1109/ICC.2006.254777
M3 - Conference contribution
AN - SCOPUS:42549161586
SN - 1424403553
SN - 9781424403554
T3 - IEEE International Conference on Communications
SP - 627
EP - 633
BT - 2006 IEEE International Conference on Communications, ICC 2006
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2006 IEEE International Conference on Communications, ICC 2006
Y2 - 11 July 2006 through 15 July 2006
ER -