VOIP in the field today

[Dave Piscitello <dave () corecom com>]

I've been away from this topic for a while but am curious.

Has any progress has been made in deploying VOIP without having to use 
underlying security protocols (SSL/TLS or IPSEC) to secure the VOIP 
signaling and media streams?

Are any folks using network edge devices to secure VOIP, e.g., 
"VOIP-aware" firewall or secure voice proxies? Are you complementing 
these with MAC level encryption from endpoint-to-proxy/endpoint-to-edge?

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