| Presentation | 2002/12/9 QoS Measurement of VoIP End-points Kazuumi Koguchi, Wenyu Jiang, Henning Schulzrinne, |
|---|---|
| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | VoIP (Voice over IP) is a service that requires synergy between the underlying network for transport and the end-points responsible for voice processing. We evaluate the end-to-end quality and performance of several VoIP end-points. In particular, we focus on the following aspects: mouth-to-ear (M2E) delay, clock skew and behavior under packet loss. Our measurement results show that M2E delay depends mostly on the receiving end-point, and when hardware IP phones act as receivers, they achieve low average M2E delay (45-90ms) in a LAN environment. For software VoIP clients as receivers, their average M2E delays range from 65ms to over 400ms. We find that all tested hardware IP phones support some form of packet concealment and it works well for up to two consecutive losses at 20 ms packet intervals. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | IP Telephony / voice over IP / quality of service / end-to-end / delay / jitter |
| Paper # | NS2002-189 |
| Date of Issue |
| Conference Information | |
| Committee | NS |
|---|---|
| Conference Date | 2002/12/9(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | |
| Vice Chair | |
| Secretary | |
| Assistant | |
| Paper Information | |
| Registration To | Network Systems(NS) |
|---|---|
| Language | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | QoS Measurement of VoIP End-points |
| Sub Title (in English) | |
| Keyword(1) | IP Telephony |
| Keyword(2) | voice over IP |
| Keyword(3) | quality of service |
| Keyword(4) | end-to-end |
| Keyword(5) | delay |
| Keyword(6) | jitter |
| 1st Author's Name | Kazuumi Koguchi |
| 1st Author's Affiliation | Information Technology R&D Center, Mitsubishi Electric Corporation:Department of Computer Science, Columbia University() |
| 2nd Author's Name | Wenyu Jiang |
| 2nd Author's Affiliation | Department of Computer Science, Columbia University |
| 3rd Author's Name | Henning Schulzrinne |
| 3rd Author's Affiliation | Department of Computer Science, Columbia University |
| Date | 2002/12/9 |
| Paper # | NS2002-189 |
| Volume (vol) | vol.102 |
| Number (no) | 512 |
| Page | pp.pp.- |
| #Pages | 4 |
| Date of Issue | |