We have a 5520 that is configured with phone proxy for 1 person remote offices to use. We also have larger offices that have l2l vpn tunnels back to the 5520 that have Cisco phones. We are trying to figure out how to get the phone proxy connections to be able to do 4 digit dialing back to the remote offices.
Basically the phone proxy is working fine when they call to the main office. Trying to figure out how to allow the phone proxy call to connect to the remote offices back through the vpn tunnel.
Table of ContentsIntroductionVersion HistoryPossible Future
UpdatesDocuments PurposeNAT Operation in ASA 8.3+ SectionsRule Types
Network Object NATTwice NAT / Manual NATRule Types used per SectionNAT
Types used with Twice NAT / Manual NAT and Network Obje...
[toc:faq]Introduction:This document describes details on how NAT-T
works.Background:ESP encrypts all critical information, encapsulating
the entire inner TCP/UDP datagram within an ESP header. ESP is an IP
protocol in the same sense that TCP and UDP are I...