<pre style="font-family: times new roman,serif;"><font size="4">Friends,<br>I am using srtp in voip setup from router to router for voice security. If i<br>just enter command "srtp" in voice service voip mode, srtp start
<br>encrypting/decrypting voice packets that i can see using debug command. But<br>my question is how i can define shared key, encryption technique like i can<br>do it in ipsec???<br>I tried to find it on cisco website but couldn't. Even i posted my question
<br>on cisco Netpro/Sadikhov etc but same no response. My voip setup consist of<br>MD110 pbx with cisco 3800 routers. Topology you can see below:<br><br>Phone---------PBX------------------------Router---------------------------------------Router-------------------PBX----------Phone
<br><br>Between PBX and Router = E1 PRI (QSig)<br>Between Router to Router = E1 Link<br>Session Protocol Between Routers = H.323<br><br>Note: IPsec can also be used for voice security but problem is, i cannot use<br>CRTP with IPSec but can use with SRTP.
<br><br>Your immediate response will be highly appreciated.<br><br>Best Regards</font></pre>