[VoiceOps] Phone auth for incoming calls?

[Alex Balashov]

On Thu, Aug 09, 2018 at 10:57:36AM -0700, Calvin Ellison wrote:

> Alex, what has been your experience with tunnel based solutions? Our choice
> seems to be IPSec VPN on existing gear or spending some cash on an SRTP-RTP
> "transcoder".

I personally find IPSec way too complicated. My preference is to do
OpenVPN, because it's so, so much simpler. There is at least one handset
vendor - Snom - that supports it right in the handset. 

I've seen lots of tunnel-based approaches with hosted PBX. A lot of them
involve sending the customer a router to put on their network where the
tunnels can land and the traffic can be diverted into the tunnel. Others
involve putting it straight into the phones, or in the case of
softphones, packaging it with the UA. 

Whatever it is, it works better and is easier to set up and make behave
more consistently than SIP-TLS.

-- 
Alex Balashov | Principal | Evariste Systems LLC

Tel: +1-706-510-6800 / +1-800-250-5920 (toll-free) 
Web: http://www.evaristesys.com/, http://www.csrpswitch.com/