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NetworkWorld test VoIP over encrypted VPN links |
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Written by Administrator
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Friday, 24 February 2006 |
The news is generally good. In high-bandwidth, low-latency environments, there is virtually no difference in quality between an unencrypted VoIP call and the same call made over an SSL VPN (see chart). Even better news is our discovery that a VoIP call made over SSL VPN on a typical broadband Internet connection is of higher quality than an unencrypted call. The only bad news comes with truly awful network connections: ones with high loss and limited bandwidth. In this environment, neither unencrypted VoIP calls nor SSL VPN-protected calls will be considered acceptable (for example, below a mean opinion score [MOS] of 3). Full article here |