[Asterisk-Users] Grandstream, SIP encryption

[John Todd]

On the Granstream 102 box that I have in front of me, there is a 
"feature list" on the side.  One of the features has grabbed my 
attention:

" - optional voice encryption (model 102D)"

Now, digging through Grandstream's site, I see that it's not offered 
quite yet.  However, sending mail to their standard "information" 
email address has resulted in no replies on any details.  Encryption 
is a topic that is near and dear to me, and I'm very interested in 
whatever anyone else knows about this vendor's implementation, and 
any possible toolkits or specs that might be relevant to efforts 
towards getting Asterisk to work with it once introduced.  SIP 
message and RTP payload encryption would be really, really useful for 
some of my clients who are at the end of cable modems and/or 
international links.  Currently, the fact that SIP and RTP are 
unencrypted is just a "fact of life", but almost everyone has asked 
about how to change that.  A great answer would be "IAX2 runs on that 
phone", but I am not hopeful for any such answer in the near term 
with only a few exceptions, so I will show interest in SIP encryption 
until such time as IAX2 is ubiquitous.

JT