[cisco-voip] VoIP - cRTP and VPN Tunnels

[MPuras at solunet.com]

Hi all.  I would like to get some clarificatons on whether cRTP compresses
the IP/UDP/RTP headers after the voice traffic has been encrypted.  I need
to know whether I should be creating the IPSec site-to-site VPN tunnel from
with the firewall (Watchguard V10) that is sitting behing the Cisco 1721
router or create the tunnel from within the Cisco router itself.  I am not
sure if I create the VPN tunnel from within the firewall whether cRTP
configured on the router can still compress the IP/UDP/RTP headers for
traffic that is encrypted.  Can someone please clarify this for me.  

Thanks.


 


Mario Puras 
SoluNet/SoluServe TAC Lead 
Web Address:  www.solunet.com   
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